Figure 1: Comparative immunohistochemical analysis reveals cytoplasmic germ cell marker VASA, in goat, sheep and cattle. Left panel shows VASA staining, and middle panel shows merge of VASA and DAPI. Right panel shows higher magnification of the marked area in the middle panel. Cattle were considered as positive control according to the data sheet for the VASA antibody. Bar= 50 �m..