Fig. 1. Ovulation and fertilization rates in Pla2g4a^–/– mice. The rate of ovulation and fertilization in wild-type and Pla2g4a^–/– mice was examined on day 2 of pregnancy on C57BL/6J (A) and CD1 (B) genetic backgrounds. The numbers within the bars indicate the number of mice with ovulation/total number of mice. Results of ovulation are mean±s.e.m. Statistical significance was evaluated using unpaired t-test and ²-test, respectively (*P<0.01).