FIGURE 4.

Methionine levels influenced methionine metabolism. A, Concentrations of key enzymes and end products involved in methionine metabolism in serum during peri‐implantation. B, Relative mRNA expression of key enzymes involved in methionine metabolism in implantation sites on day 7, (C) day 5 and (D) day 6 of pregnancy. E, Relative mRNA expression of key enzymes involved in methionine metabolism in ovarian tissues on day 7, (F) day 5 and (G) day 6 of pregnancy. Each bar represented the results in rats with n = 12 replicates ± SE. ***P < .001; **P < .01; *P < .05