Fig. 3. PTPN13 expression in the oocytes. (A) The expression of PTPN13 mRNA in Xenopus oocytes was determined by RT-PCR. Minus RT was used as a negative control. (B) Immunohistochemistry of mouse ovary was performed using a polyclonal antibody against mouse PTPN13. Arrows indicate the cytoplasm of the oocytes.