Figure 6.

Immunofluorescence localization of BMPRII protein in hamster ovary sections during perinatal development and after in vivo exposure to FSH antiserum. For the sake of brevity, images of selected days are furnished to highlight the pattern of developmental expression. E13 and E15 (A and B), P1, P6, P8, and P10 (C–F), ovaries of P8 (G and H) hamsters were exposed in utero to an FSH antiserum on E12 and received a single injection of saline (G) or eCG (H) on P1. I, Section of a P8 ovary incubated without the primary antibody. OC, Oocyte cluster; O, oocyte; S, somatic cells; GC, granulosa cell; S0, primordial follicle; S1, primary follicle; S2, preantral follicle at stage 2; IC, interstitial cells.