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Prof. Ahmed Hassan Sayed Hassan

Professor, Department of Anatomy and Histology , Faculty of Veterinary Medicine, Assiut University

C.V Details




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Current Address

:

staff towers building h floor 4 apartment number 17

Office Tel.

:

088-2423518

Home Tel.

:

0882080754

Mobile No.

:

01021101160

Fax No.

:

088-2369001

E-Mail

:

ahassan@aun.edu.eg
ahassansayed@yahoo.com

google scholar link

:

https://scholar.google.com.eg/citations?user=XkBpAfgAAAAJ&hl=en
Educational Qualifications:
  • Ph. D., University of Veterinary Science, 1975
  • Professor, Department of Anatomy and Histology , Faculty of Veterinary Medicine, Assiut University, 2005
  • Professor, Department of Anatomy and Histology , Faculty of Veterinary Medicine, Assiut University, 1987
  • Associate Professor, Department of Anatomy and Histology , Faculty of Veterinary Medicine, Assiut University, 1982
  • Lecturer, Department of Anatomy and Histology , Faculty of Veterinary Medicine, Assiut University, 1978
  • Demonstrator, Department of Anatomy and Histology , Faculty of Veterinary Medicine, Assiut University, 1968

Research fields:
BREEDING , OREOCHROMIS NILOTICUS , HISTOMORPHOLOGICAL CHANGES

Publications:

1 - Marwa M. Husseina and A.H.S. Hassana. , Special histological features of the angioarchitecture of the ovaries in the Egyptian buffaloes (Bubalus bubalis). , a Department of Anatomy, Histology and Embryology, Faculty of veterinary Medicine, Assiut University, Assiut 71526, Egypt , 2018
2 - Doaa M. Mokhtar,* Manal T. Hussein, and Ahmed H. S. Hassan, Melatonin Elicits Stimulatory Action on the Adrenal Gland of Soay Ram: Morphometrical, Immunohistochemical, and Ultrastructural Study, microscopy and microanalysis, Cambridge university press, 1-16, Microsc. Microanal. page 1 of 16 doi:10.1017/S1431927617012727 ©, December, 2017
3 - Doaa M. Mokhtar∗, Enas A. Abd-Elhafez, and Ahmed H. S. Hassan, Histology, Histochemistery and Surface Architecture of the Rectum of Grass Carp (Ctenopharyngodon idella), Journal of Advanced Microscopy Research, American Scientific Publishers, 12, 1-5, doi:10.1166/jamr.2017.1332, 2017
4 - Doaa M. Mokhtar, Hanan H. Abd-Elhafeez, Ahmed Abou-Elmagd, and Ahmed H. S. Hassan, Melatonin Administration Induced Reactivation in the Seminal Gland of the Soay Rams During non-Breeding Season: An Ultrastructural and Morphometrical Study, journal of morphology , wilely online library, 277, 231–243 , wileyonlinelibrary.com, February, 2016
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5 - Doaa M.Mokhtar, Hanan H.Abd-Elhafeez, Ahmed Abou-Elmagd,and Ahmed,H.S.Hassan, Melatonin administration induced reactivation in the seminal gland of the soay rams during non-breeding season: An ultrastructural and morphometrical study., Journal of Morphology, ,Vol.277, ,pp.231-243, 2016
6 - Hanan H. Abd-Elhafeez Doaa M. Mokhtar Ahmed H.S. Hassan, Effect of Melatonin on Telocytes in the Seminal Vesicle of the Soay Ram: An Immunohistochemical, Ultrastructural and Morphometrical Study, cells tissues organs , karger, Vol. 202, 2016
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7 - Doaa M.Mokhtar, Hanan H.Abdelhafeez , Ahmed Abou Elmagd , and Ahmed H.S.Hassan, Melatonin Administration Induced Reactivation in the Seminal Gland of the Soay Rams During non-Breeding Season: An ultra structural and Morph metical Study ., Journal of Morphology , vol.277, pp231-243, 2016
8 - Doaa M Mokhtar*, Enas A Abd-Elhafez and Hassan AHS, A Histological, Histochemical and Ultrastructural Study on the Fundic Region of the Stomach of Nile Catfish (Clarias gariepinus), cytology and histology, omicis, 6 (4), http://dx.doi.org/10.4172/2157-7099.1000341, 2015
9 - Doaa M Mokhtar*, Enas A Abd-Elhafez and Hassan AH, Light and Scanning Electron Microscopic Studies on the Intestine of Grass Carp (Ctenopharyngodon idella): I-Anterior Intestine, Aquaculture Research & Development , omicis, 6 (11), http://dx.doi.org/10.4172/2155-9546.1000374 , November, 2015
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10 - Mokhtar DM*, Abd-Elhafez EA and Hassan AH, Light and Scanning Electron Microscopic Studies on the Intestine of Grass Carp (Ctenopharyngodon idella): II-Posterior Intestine, Aquaculture Research & Development, omicis, 6 (12), http://dx.doi.org/10.4172/2155-9546.1000380, November, 2015
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11 - Doaa M.Mokhtar, Enas A. Abd-Elhafz and A.H.S.Hassan. , 99- A Histological , Histochemical and Ultrastructural study on the fundic region , Journal of Cytology and Histology, Vol.6.Issue , 4,1-6., 2015
12 - Doaa M.Mokhtar, Enas A. Abd-Elhafez and A.H.S.Hassan, Light and scanning electron microscopic studies on the intestine of grass carp (Ctenopharyngodon idella) : II.Posterior Intestine. , Aquaculture Research and Development. , Vol.6, 1-6. (2015)., 2015
13 - Doaa M.Mokhtar, Enas A. Abd-Elhafez and A.H.S.Hassan. , Light and scanning electron microscopic studies on the intestine of grass carp (Ctenopharyngodon idella) : I-Anterior intestine , Aquaculture Research and Development. , Vol.8, 1-6, 2015
14 - Enas.A.Abdel-Hafez; Alaa,S.Abou-Elhamd, and A.H.S.Hassan , Effects of administration of melatonin on the harderian gland of sheep. , Journal of Interdiscipl. Histopathol , Journal of Interdiscipl. Histopathol, Vol.2(1), , 19-25, 2014
15 - Enas.A.Abdel-Hafez; Doaa,M.mokhtar; Alaa,S.Abou-Elhamd, and A.H.S.Hassan, Comparative histomorphological studies on oesophagus of catfish and grass carp, Journal of histology, 1-10, 2013
16 - Doaa, M. Mokhtar*; Enas, A. El-Hafez; Hassan, A.H.S and Fatma, A, Mostafa, Histogenesis of Liver of Dandarawi Chicken, American Journal of Life Science Researches, World of Researches Publication, 1 (2), 47-58, www.worldofresearches.com, April, 2013
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17 - Enas.A.Abdel-Hafez; Doaa,M.mokhtar; Alaa,S.Abou-Elhamd, and A.H.S.Hassan. , Comparative histomorphological studies on oesophagus of catfish and grass carp. , Journal of histology. , Journal of histology. , Vol.2013,, 1-10.(2013), 2013
18 - ENAS A.A. EL HAFEZD; DOAA M.M. MAHMOUD; SH.M. AHMED* and A.H.S. HASSAN, HISTOMORPHOLOGICAL CHANGES IN THE OVARIES OF OREOCHROMIS NILOTICUS DURING BREEDING AND NON BREEDING SEASONS , Assiut Vet. Med. J. , Vol. 55, No. 121, April, 2009
19 - Enas A.A. El Hafez; Doaa M.M. Mahmoud Sh.M. Ahmed* AND A.H.S. Hassan , HISTOMORPHOLOGICAL CHANGES IN THE TESTES OF OREOCHROMIS NILOTICUS DURING BREEDING AND NON BREEDING SEASONS , Assiut Vet. Med. J., Vol. 55, No. 121, April, 2009
20 - Enas A.A El Hafez ; Doaa M. M. Mahmoud ; Sh. M. Ahmed and A. H. S. Hassan. , Histomorphological Changes in the Ovaries of Oreochromis Niloticus During Breeding and Non Breeding Seasons. , Assiut Vet. Med. , J. Vol 55. No 121. , pp 227 – 253 , July, 2009
21 - Enas A.A El Hafez ; Doaa M. M. Mahmoud ; Sh. M. Ahmed and A. H. S. Hassan. , Histomorphological Changes in the Testes of Oreochromis Niloticus During Breeding and Non Breeding Seasons, Assiut Vet. Med , Assiut Vet. Med, Vol 55., No 121. pp 254 – 273 , June, 2009
22 - Enas,A.A. Elhafez, D.M.M.Mahmoud, Sh.M.Ahmed, and A.H.S.Hassan, Histological observations in the female genital system of Oreochromis nilaticus, 31 Scientific Congress of the Egyptian Society of Histology and Cytology.Egypt, Cairo, December , December, 2007
23 - Enas,A.A. Elhafez, D.M.M.Mahmoud, Sh.M.Ahmed, and A.H.S.Hassan, Histological observations in the female genital system of Oreochromis nilaticus. 31 Scientific Congress of the Egyptian Society of Histology and Cytology, Cairo, December, 2007
24 - Abd-Elnaeim M. M. Mahmoud., A. Saber, A. Hassan, A. Abou-Elmagd, K. Klisch, C. J. P. Jones, and R. Leiser, Development of the areola in the early placenta of the one-humped camel (Camelus dromedarius): A light, scanning and transmission electron microscopical study., Anat. Histol. Embryol, Vol. 32, PP. 326-334, 2003
25 - M.M.M.Abd-Elnaeim,A.Saber,A.H.S.Hassan,A.Abou-Elmagd, K.Klisch,C.J.P.Jones and R.Leiser, Development of the Areola in the early Placenta of the One-humped Camel(Camelus dromedarius):A Light, Scanning and Transmission Electron Microscopical Study, Anat. Histol. Embryol, 32, 326-334 , 2003
26 - M.M.M.Abd-Elnaeim,A.Saber,A.H.S.Hassan,A.Abou-Elmagd, , 92- Development of the Areola in the early Placenta of the One-humped Camel (Camelus dromedarius):A Light, Scanning, Anat. Histol. Embryol. 32, 326-334 (2003) , 2003
27 - Abu-Elmagd, A.M.Kelany, A.O.Salem and A.H.S. Hassan , Morphological studies on the testis of sheep in non-breading season after melatonin administration, 24th Congress of the European Association of Veterinary Anatomists. Brno, Czech Republic, July 21-25 , July, 2002
28 - Abou-Elmagd, A.M.Kelany, A.O.Salem and A.H.S. Hassan , Morphological studies on the testis of sheep in non-breading season after melatonin administration. , 24th Congress of the European Association of Veterinary Anatomists. Brno, Czech Republic, July 21-25 (2002). , July, 2002
29 - A.Abou-Elmagd,A.M.Kelany, A.H.S.Hassan. and G.Lincoln, Morphology of Leydig-Cells of ram after melatonin administration in non-breeding season, Anatomische Gesellschaft,Wurzburg,Germany, September, 2001
30 - A.E.Zayed, Effect of melatonin on the seminiferous epithelium of rams in the non breading season, a morphometric and A morphological study., Anatomische Gesellschaft Congress,Wurzburg,Germany, 2001
31 - A.Abou-Elmagd,A.M.Kelany, A.H.S.Hassan. and G.Lincoln. , Morphology of Leydig-Cells of ram after melatonin administration in non- breeding season, Anatomische Gesellschaft,Wurzburg,Germany.(Sept.2001), September, 2001
32 - O.F.X. Almeida, G.L. Conde, C. Crochemore, B.A. Demeneix, D. Fisher, A.H.S. Hassan, M. Mayer, F. Holsber and M.T. Michaelidis , Subtle shifts in the ratio between pro-and anti-apoptotic molecules after activation of corticosteroid receptors decide neuronal fate, FASEB J., 14, 779-790 , 2000
33 - A.H.S. Hassan , P. Von Rosenstiel, V.K. Patchev, F. Holsboer and O.F.X. Almeida , Plasticity of hippocampal corticosteroid receptors during aging in the rat, FASEB J, 13, 115-122 , 1999
34 - S. Hellbach, P. Gartner, J. Deicke, D. Fischer and A.H.S. Hassan, Inherent glucocorticoid response potential of isolated hypothalamic neuroendocrine neurons, FASEB J, 12, 199-207 , 1998
35 - A.H.S. Hassan, D. Fischer, A. Michaclidis and B. Abdullah, B.A, Dichotmous Control of Apoptosis and Neurogenesis in the Rat Dentate Gyrus by Mineralocorticoid and Glucocrticoid Receptor Ligands , 17th Annu. Meet. Soc. Neurosci., New Orleans, No. 459. 1 , 1997
36 - M. Ghorbel, I. Seugnet, A.M. Ableitner, A.H.S. Hassan, B.A. Demeneix, T3 treatment increases mitosis, then bax expression and apoptosis in the optic lobe of the chick embryo, Neuroscience Letters , 231, 127-130 , 1997
37 - Laurent, M. Saghs, Bassima, Abdallah, A.H.S. Hassan, Giovanni, Levi, Amaury, de luze, John, G, Reed, and Barbara, A. Deneix, Apoptosis in Xenopus tadpole taiol muscles involves Bax-dependent pathways, FASEB,J, 801-808 , 1997
38 - A. Abou-Elmagd, M. Moustafa, G.A. Lincoln and A.H.S. Hassan , Light and electron microscopical studies on the thyroid gland of sheep after melatonin administration., Anatomy and Embryology , 1996
39 - S. Hellbach, P. Gartner, J. Deiche, D. Fischer, A.H.S. Hassan and O.F.X. Almeida, Functional studies on juvenile rat-derived hypothalamic corticotrophin releasing hormone (CRH), Arginine vasopressin (AVP) and ß-endorphin (ß-end) neurons grown in a novel primary culture system, J. Neuroscience , 1996
40 - V.K. Patchev, M.d., Ph.D., A.H.S. Hassan, B. V. Sc., Ph.D., F. Holsboer, M.D., Ph. D., and O.F.X. Almeda, Ph. D, The neurosteroid tetrahydroprogesterone attenuates the endocrine response to stress and exerts glucocorticoid-like effects on vasopressin gene transcription in the rat hypothalamus, Neuropsychopharmacology, Vol. 15, No. 6, 1996
41 - Bassima Abdallah, A.H.S. Hassan, Corinne Benoist, Daniel Goula, Jean Paul Behr and Barbara A. Demeneix , A Powerful non-viral vector for in vivo gene transfer into the adult mammalian brain: Polyethylenimine, J. Gene Therapy, 1947-1954 , 1996
42 - Mousa, S.A., Schater, M., Mitchell, W.M., A.H.S. Hassan, Stein, C, Local upregualation of corticotrophin - releasing hormone and interleukin-1 receptors in rats with painful hindlmb inflammation, J. Pharmacol, 311, 221-231 , 1996
43 - B. Schwartz, C. Benoist, B. Abdallah, K. Kangara, A.H.S. Hassan, D. Scherman and B.A. Demeneix, Gene transfer by naked DNA into adult mouse brain, Gene Therapy, 3, 405 – 411 , 1996
44 - C. Stein, M. Pfluger, A. Yassouridis, J. Hoeizl, K. Lehrberger, C. Welte and A.H.S. Hassan , No tolerance to peripheral morphine analgesia in presence of opioid expression in inflamed synovia, J. Clin. Investigation , Vol. 98, No. 3, 793-799 , 1996
45 - A.H.S. Hassan, P. Von Rosenstiel, V.K. Patchev, F. Holsboer and O.F.X. Almeida, Exacerbation of apoptosis in the dentate gyrus of the aged rat by dexamethasone and the protective role of corticosterone, Exper. Neurology, Vol. 140, 43-52, 1996
46 - Abu-Elmaagd A., M.N, K. Moustafa, G. Lincoln and A.H.S. Hassan , Light and lectron microscopical studies on the thyroid gland of sheep after melation administration, In:First international conference on electron microscope, adrances in research in different fields of science Ismaillia, Egypt, Sept. 13-15 , September, 1995
47 - A.H.S. Hassan, V.K. Patchev, F. Holsboer and O.F.X. Almeida , Apoptosis in the rat dentate gyrus: The effect of aging, stmulation by dexamethasone, and the apparent protective role of corticosterone, Society for Neurosciennce, Washington, USA, 1995
48 - D. Fischer, V.K. Patchev, S. Helbach, A.H.S. Hassan and O.F.X.Almeida , Lactation as a model of naturally-reversible hypercorticalism: Plasticity in the mechanisms governing hypothalamo-adrenocortical activity, J. Clin. Investigation, Vol. 96, 1208-1215 , 1995
49 - C. Stein, M. Schafer and A.H.S. Hassan , Perheral opioid receptors: Modern trends in postoperative pain control, Ann. Med, 119-221 , 1995
50 - F. Lezoualc’h, A.H.S. Hassan, H. Abdel-Tawab, J. Puymirat, B.A. Demeneix, Precocious auto-induction of thyroid hormone receptors in embryonic chick hypothalamic neurons, Neuroscience Lett, 180, 197-202 , 1994
51 - S.A. Mousa, W.M. Mitchell, A.H.S. Hassan, L. Carter and C. Stein., Corticotropin releasing factor receptors in inflamed tissue: Autoradiographic identification, 23rd Annual Meeting of the Society for Neuroscience, Washington D.C, 1993
52 - S. Hellbach, A.H.S. Hassan and O.F.X. Almeida , Primary cultures of postnatal rat hypothalamic neurons: Characterization and functional studies on corticotrophin releasing hormone, arginine vasopressin and ß-endorphin neurons, 23rd Annual Meeting of the Society for Neuroscience, Washington D.C, 1993
53 - A.H.S. Hassan, A. Ableitner, C. Stein and A. Herz , Local inflammation of the rat paw enhances opioid receptor density in the paw tissue and their axonal transport in sciatic nerve, INCR, Suppl, 163-164 , 1993
54 - F. Lezoualc’h, A.H.S. Hassan, H. Abdel-Tawab and B.A. Demeneix, Precocius auto-regulation of thyroid hormone receptors in embryonic chick hypothalamic neurons, Developmental Brain Research , 1993
55 - O.F.X. Almeida, A.H.S. Hassan and F. Holsboer , Intrahypothalamic Neuroendocrine actions of CRF-41. Ciba foundation Sympsium , Ciba foundation Sympsium, Vol. 172, 151-172 , 1993
56 - C. Stein, A.H.S. Hassan, K. Lehrberger, J. Giefing and A. Yassouridis , Opioid peptides from immune cells interact with peripheral opioid receptors to inhibit pain in inflamed tissue, Lancet, Vol. 342, 321-324 , 1993
57 - V.K. Patchev, S.F. Schlosser, A.H.S. Hassan and O.F.X. Almeida, Oxytocin binding sites in rat limbic and hypothalamic structures: Site specific modulation by adrenal and gonadal steroids, Neuroscience, Vol. 57, No. 3, 537-543 , 1993
58 - A.H.S. Hassan, A. Ableitner and O.F.X. Almmeida, Demonstration of opioid receptors on rat gonadotrophs, Endocrinology, 1993
59 - R. Przewlocki, A.H.S. Hassan, W. Lason, C. Epplen, A. Herz and C. Stein , Gene expression and localization of opioid peptides in immune cells of inflamed tissue: Functional role in antinociception, Neuroscience, Vol. 48, No. 2, 49-500 , 1992
60 - A.H.S. Hassan, R. Przewlocki, A. Herz and C. Stein , Dynorphin, a preferential ligand for K-opioid receptors, is present in nerve fibers and immune cells within inflamed tissue of the rat, Neuroscience lett, 140, 85-88 , 1992
61 - O.F.X. Almeida, A.H.S. Hassan, M.S. Harbuz, E.A. Linton and S.L. Lightman, Hypothalamic corticotrophin – releasing hormone and opioid peptide neurons; Functional changes after adrenalectomy and/or castration, Brain Res, 571, 189-198 , 1992
62 - F. Lezoualc’h, A.H.S. Hassan, P, Giraud, J.P. Loeffler, S.L. Lee, and B. Demneix, Assignment of the ß-thyroid hormone receptor to 3,5,3- triiodothyronine – dependent inhibition of transcription from the thyrotropin-releasing hormone promoter in chick neurons, Mol. Endocrin, Vol. 6, No. 11, 1797-1804 , 1992
63 - Lezoulc’h, F., A.H.S. Hassan, Loeffler, J.P., Lee, S.L., Giraud, P. Demeneix, B.A, Assignment of the ß thyroid hormone receptor to T3-dependent inhibition of TRH transcription in hypothalamic neuons, Molecular Endocrinology , 1791-1804 , 1992
64 - Boutillier, A.L., Barthel, F., A.H.S. Hassan, Loeffler, J.P., Demeneix, B.A. , Gene transfer into neurons and chromaffin cells, Prog. Psycho. Pharm. Biol. Psych, 929-968 , 1992
65 - Demeneix, B.A., Lezoualc’h, F., A.H.S. Hassan, Loeffler, J.P. and Giraud, P, Role du recepteur ß des hormones thyroidiennes dans la regulation de la transcription de la TRH. C.R, Soc. Biol, 491-499 , 1991
66 - B. Demeneix, F. Lezoualc’h, A.H.S. Hassan, J.P. Loeffler, S.L. Lee, and P. Giraud , T3-dependant inhibition of TRH transcription in hypothalamic neurons is mediated by the beta thyroid hormone receptor, C.R. Soc. Biol, 491-499 , 1991
67 - C. Stein, A.H.S. Hassan, Ch. Gramsch and A. Herz, Local apioid receptors mediating antinociception in inflammation: endogenous ligands, Proceeding of the VIthWorld Congress on Pain, 88-87 , 1991
68 - Stein, C., Hassan, A.H.S. Hassan, Przewlocki, R., Gramsch, C., Peter, K., Herz, A, Opioids from immune cells interact with receptors on sensory nerves to inhibit nociception in inflammation, Proc. 2ndInt. Congress on the Immune Consequences of Trauma, Shock and Sepsis. Springer, Berlin, Heidelberg, New York, 1991
69 - Stein, C., A.H.S. Hassan, Grasch, C., Peter, K., Herz, A, Peripheral opioid receptors mediating antinoception in inflamed tissue of the rat, Exogenous and endogenous ligands. Anesth. Analg, 72-76 , 1991
70 - A.H.S. Hassan, M.N.Moustafa, A. Abou-Elmagd, Aziza A. Selim and G.A. Lincoln, Induction of seasonal testicular reactivation in Soay rams by melatonin. 1- Histological and morphometrical changes in the seminal gland , Assiut Vet. Med. J, Vol. 24, No. 47, 40-50 , 1990
71 - C. Stein, A.H.S. Hassan, R. Przewlocki, Ch. Gramsch, K. Peter and A. Herz, Opioids from immunocytes interact with receptors on sensory nerves to inhibit nociception in inflammation., Proceeding of the National Acadmy of Sciences, U.S.A, Vol. 87, 5935-5939, 1990
72 - Stein, C., A.H.S. Hassan, Comisel, K., Herz, A, Endogene Schmerzinhibition bei Entzundung. Opioide aus Immunzellen aktivieren neurale Opioidrezeptoren , Zeitschr Rheumatol, 1–72 , 1990
73 - Ch. Gramsch, R. Schulz, S. Kosin, A.H.S. Hassan, and A. Herz, Production and characterization of anti-idiotypic anti-opioid receptor antibody, Methods in Enzymology, Vol. 178, 244-265 , 1989
74 - A.H.S. Hassan, O.F.X. Almeida, Ch. Gramsh and A. Herz, Immunocytochemical demonstration of opioid receptors in selected rat brain areas and neuroblastoma X glioma hybrid (NG 108-15) cells using a monoclonal anti-idiotypic antibody, Neuroscience, Vol. 32, No. 1, 269-278 , 1989
75 - Stein, C. Gramsch, G. A.H.S. Hassan, Parsons, C.S. Przewlocki, R. , Peripheral mechanisms of opioid analgesia, Symposium Advances in opioid research, Ringberg FRG, 1989
76 - A.H.S. Hassan, O.F.X. Almeida, I. Forgas-Moya, Ch. Gramsch and A. Harz., Immunocytochemical detection of opioid receptors, opioid peptides and corticotrophin – releasing hormone in rat brain and NG 108-15 cells, Advances in the Biosciences , 1989
77 - M.A. Moustafa and A.H.S. Hassan, Effect of hydrocortisone on the healing per primam of experimental wounds in the skin and intestinal resection anastomses in dog, Assiut Medical Journal, 12-23 , 1988
78 - G. Kamel, A.H.S. Hassan , A.S. Saber and A. Ahmed , Morphological changes in oviductal mucosal epithelium in relation to ovarian activity in buffaloes, 10th Congress of Anatomy, Cairo , 1987
79 - M. Abdel-Raouf, A.H.S. Hassan , G. Kamel and M.R. Fath El-Bab, Quantitative and qualitative histological changes in the testes of rabbits after 1ong-erm hCG and TP administration, 10th Congress of Anatomy, Cairo , 1987
80 - G. Kamel, A.H.S. Hassan, A.M.A. Ali and M.N.K. Moustafa, Histological studies on the prenatal development of goat stomach, Assiut Vet. Med. J, Vol. 18, No, 36, 25-30 , 1987
81 - M. Abdel-Raouf, A.H.S. Hassan, G. Kamel and M. R. Fath El-Bab, Morphological and stereological changes in the thyroid gland of rabbits after long-term hCG and TP administration, Assiut Vet. Med. J., Vol. 18, No. 36, 177-182 , 1987
82 - G. Kamel, A.H.S. Hassan, F.F. El-Hommosi and M.N.K. Moustafa, Quantitative morphological study on the seminal gland of lambs after zeranol implantation, AssiutVet. Med. J, Vol. 18, No. 36, 52-57 , 1987
83 - H.Badawi, M.R. Fath El-Bab, A.H.S. Hassan and M.N.K.Moustafa, The histogenesis of the pilosebaceous apparatus in dogs, Assiut Vet. Med. J, 31-38 , 1987
84 - H.Badawi, M. R. Fath El-Bad, A.H.S. Hassan and M.N.K. Moustafa , Morphogenesis of the cutaneous vasculature in dogs, Assiut Vet. Med. J, Vol. 18, No. 36, 39-44 , 1987
85 - G. Kamel, A.H.S. Hassan, A.M.A. Ali and A. Nafady , Light and scanning electron microscopical observations on the shell gland of Fayoumi fowl, Assiut Vet. Med. J, Vol. 18, No. 35, 58-62 , 1987
86 - G. Kamel; A . H . S . Hassan; A . M . A . Ali and A . Nafady , Light And scanning electron microscopical observations on the shell gland of fayoumi fowl , Assiut Vet. Med. Journal , Vol. 18 No. 35 , 58 - 62 , 1987
87 - A.H.S. Hassan, C. Tsonis and A. McNeily , Histochemical and immunocytochemical changes in ovine pituitary gonadotropic cells in culture after treatment with LHRH-A., inhibin and oestradiol., XVI Congress of Europian Association of Vet. Anatomists, Budapest Hungary , 1986
88 - A.H.S. Hassan, C. Tsonis and A. McNeilly, Improved histochemical and immunoytochemical methods of light microscopy of ovine pituitary cells in monolayer culture, XVI Congress of Europian Association of Vet. Anatomists. Budapest Hungary , 1986
89 - M.R. Fath El-Bab, A.H.S. Hassan , Aziza A. Selim and M. Abdel-Raouf , Postnatal growth and histological development of the gonadotropic cells in relation to puberty in bulls, 9th Congress of Anatomy Cairo , 1986
90 - Salem,G. Kamel, A.M.A. Ali, A.H.S. Hassan and Aziza A.Selim, Quantitative histological studies on the thyroid gland of ewe during estrus cycle and pregnancy, Assiut Vet. Med,J, vol 17, No. 34, 45-51 , 1986
91 - A.H.S. Hassan, G. Kamel, M.R. Fath El-Bab and Aziza A. Selim , The effect of long-term TP or hCG administration on reproductive functions in adult rabbit. II- Histomorphological changes in the prepuce and preputial glands. , Assiut Vet. Med. J, Vol. 17, No. 33, 23-28 , 1986
92 - A.H.S. Hassan, A. Aboul-Ela, M.R. Fath El-Bab and A. Selim , Cyclical changes in gonadotropic cells in relation to the ovarian activity in buffaloes, Assiut Vet. Med. J, Vol. 17, No. 33, 15-20 , 1986
93 - M. Abdel-Raouf, M.R. Fath El-Bab, G. Kamel, A.H.S. Hassan and A.M.A. Ali , The effect of long-term TP or hCG administration on some hypothalamic neurosecretory centers, 9th Congress of Histology, Cairo, 1985
94 - A.H.S. Hassan , G. Kamel, A.M.A. Ali and Aziza A. Selim, Cytomorphological changes of the adenohyphysis in castrated male goats, Assiut Med. J. , Vol., 9, No. 2 , 84-91 , April, 1985
95 - A.H.S. Hassan, G. Kamel, Aziza A. Selmi and A.M.A. Ali , Quantitative and qualitative analysis of the testes in goat in relation to fertility, First Int. Conf. Appl. Sci. Zagazig Univ, 1-9 , 1985
96 - G. Kamel, A.M.A. Ali, A.S. Saber and A.H.S. Hassan, Scanning electron microscopy and histomorphological studies on the ruminal papillae in the goat, First Scientific Congress, Fac. Vet. Med., Assiut University, 289-303 , 1984
97 - I. Salem, G. Kamel and A.H.S. Hassan, Histochemical studies on the skin of friezian, native cattle and buffaloes after exposure to solar radiation, 5th Congress of Histology, Cairo , 1984
98 - G. Kamel, A.H.S. Hassan and F.F. El-Hommosi, The effect of zeranol implantion on some endocrine glands and gonads in fat-tailed lambs II- The testes, Assiut Vet. Med. J, Vol. 11, 35-40 , 1983
99 - A.H.S. Hassan and G. Kamal, The effect of zeranol implantation on some endocrine glands and gonads in fat-tailed lambs. III- Adrenal cortex and thyroid gland , Egypt J. Histology , 1983
100 - I. Salem, A.H.S. Hassan G. Kamel and A.A. Abdel-Raheim , Histological changes in the mammary gland of ewe in relation to estrogen and progesterone levels during pregnancy, Assiut Vet. Med. J, vol 11 No. 21, 45-49 , 1983
101 - A.Hifny, A.H.S. Hassan , G. Kamel and El-Kerdawy , Qualitative and quantitative cell type population in the pars distalis of the pituitary gland in the male goat around the year, Assiut Vet. Med. J, Vol. 11, No. 21, 27-33 , 1983
102 - M.M. El-Zawahri and A.H.S. Hassan , Chromosomal analysis of the Egyptian water buffalo (Bubalus bubalis L.), 2nd world Congress on Genetic. Madrid, Spain , 1982
103 - Z. Mikrosk. Anat. Forsch., Leipzig ,A.H.S. Hassan , G. Kamel and F.F.El-Hommosi, The effect of zeranol implantion on some endocrine glands and gonads in fat-tailed lamb, The pituitary gland (pars distalis), 95, 4, 634-644 , 1981
104 - A.H.S. Hassan and A. K. Ahmed and G. Kamel, The structure of the Ultimobranchial body of the duck, 15th. Vet. Congress, Cairo, 1981
105 - Guzsal, E. and A.H.S. Hassan , Ultrastructure of adrenal medullary cells in the geese and duck, Acta. Vet. Acad. Sci. Hung, 25 (4), 321-333 , 1976
106 - A.H.S. Hassan , Histological and histochemical studies on the adrenal glands of geese and ducks, Act. Vet. Acad. Sci. Hung, 25 (1), 19-34 , 1975

Supervisions :

1- Doaa Mohammed Mokhtar Mahmoud, Comparative light- and electron- microscopical studies on the gastrointestinal tract of carnivorous and herbivorous fish, Ph. D., 28 March 2011
Supervisors : Ahmed H. S. Hassan,Shaban M. Ahmed ,Enas A. Abd. Elhafez
2- fatma el-Zahraa ahmed Mustafa, development of liver in Chicken, M. Sc, 30 June 2012
Supervisors : Ahmed H. S. Hassan, Enas A. Abd El-Hafez, Doaa Mohammed Mokhtar
Number of courses0 course