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Alteration in mouse ovarian PGE2 levels during periovulatory period. Mouse ovarian PGE2 levels were determined at pre-eCG treatment (labeled as cycling), hCG0h, hCG6h, and in the morning of PRG2. Data are means ± se of the numbers indicated in each column, and statistically evaluated by ANOVA and Tukey-Kramer multiple comparison test. ND, not determined.*P < 0.05 vs. Pla2g4a−/− at the same time point; #P < 0.01 vs. same genotype at hCG0h and PRG2.
