Figure 3

Plasma concentrations of PGFM (A), P4 (B), E2 (C), activin A (D), inhibin (E) and follistatin (F) during the oviposition or ovulation cycle. Vertical bars represent the standard errors of the means. The arrow depicts the time of oviposition. Values marked with different letters were significantly different (a–b: P < 0.05; A–B, A–C, B-C: P < 0.01).