Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.236.238KocisovaM. M.F. Sirotakova F. Dorko K.Schmidtova S. Rybarova I. Skardova 2200032The aim of the present study was to compare the presence and topography of intra bursal adrenergic and ACHE-positive nerve structures in the bursa cloacalis of the chickens and pheasants from hatching until 12 months of age. The adrenergic nervous profiles were demonstrated visualized by means of verified histochemical method with glyoxylic acid and for demonstration of ACHE-positive nerve fibres were used the direct tiocholin method cytochemistry evidence acetylcholinesterase. In the bursa cloacalis the distribution and topography of adrenergic and ACHE-positive nerve formation in chickens and pheasants were corresponding. The visible nerve fibres were founded mainly in close connection with vessels or as solitary fibres running through fibrous septa around the lymphatic follicles. Nerve fibres in germinal center of lymphatic follicles were not discover. The highest density of adrenergic and ACHE-positive nerves was observed in the period between 3rd and 4th months of age. After this period gradual reduction of adrenergic and ACHE-positive nerve structures was observed and the bursa cloacalis of a 12 months old chicken and pheasant showed only single nerve structures located mainly in the perivascular topography.]]>Al-Shawaf, A., S.A.A. Zaidi and M.D. Kendall,1987155233233Bulloch, K. and W. Pomerantz,19842285768El-Badawi, A. and E.A. Schenk,196715580588Felten, D.L., S.Y. Felten, S.L. Carlson, J.A. Olschowka and S. Livnat,1985135755s765sFelten, D.L. and S.Y. Felten,198927388Inoue, K.,197350317325Kendall, M.D., B.A. Atkinson, F.J. Munoz, C. de la Riva, A.G. Clarke and B. von Gaudecker,1994185617625Magni, F., F. Bruschi and M. Kasti,1987424379385Nance, D.M., D.A. Hopkins and D. Bieger,19871134147Novotny, G.E. and Y. Hsu,199334155163Shvalev, V.N. and N. Zhuckova,1987939192Singh, U. and J. Fatani,198811313Singh, U.,198414757759Sirotakova, M., D. Stopek, M. Kocisova and F. Dorko,1997547181Zentel, H.J., R. Albrecht, D. Nohr, S.H.M. Jeurissen, O. Vainio and E. Weihe,199159177188Zentel, H.J. and E. Weihe,19915132147