Histomorphology study of bull frog's thymus.
Deng Shi-ming, Xiao Ke-yu, Jiang GuoMin · Yunnan Nongye Daxue xuebao · 2009
In order to study the histomorphology of thymus,the bull frog was chosen as test material.The paraffin sections and stained smears of thymus showed that the boundary between the cortexes and the medullas was obvious;in the medullas there were many concentric Hassall's corpuscles,endosomes,mysoid cells;the content of T-lymphocytes was(74.88±9.58)% and they mainly distributed in the medullas,while B-lymphocytes mainly distribute in the cortexes.