Fig. 3. Betaine transport development in vivo. The rate of betaine transport in mouse oocytes is shown 19-29 hours post-hCG. Fertilization was assumed to take place in the oviduct 14 hours after treatment with human chorionic gonadotropin (post-hCG). Points not sharing the same letters are significantly different (P<0.05; ANOVA and Tukey-Kramer post-hoc test). Each point represents the mean±s.e.m. of three independent measurements.