Fig. 2
From: Subfamily hypostominae: similarities and differences in testicular structure of amazonian fish
Analysis and morphometry of the germ cell and seminiferous tubule. a,b,c Testis with anastomosed (*) seminiferous tubules (dotted line); d Mean and comparative diameter of the seminiferous tubules of A spermatogonia (SgA), B spermatogonia (SgB), spermatocytes (Sc) and spermatids (St) between the species B. xanthellus (BX), P. oligospila (PO) and H. zebra (HZ); e,f,g,h,i,j Photomicrography of the seminiferous tubule, showing spermatogonia (SgA, SgB), spermatocytes (Sc) and spermatids (St), and spermatozoa (Sz) in the tubule lumen (L). Scale bar: a-c:25 μm, e-j: 10 μm