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Effects of weaning manipulations on pituitary expression of Gnrhr. Gnrhr mRNA levels were determined by RT-PCR. Data are expressed as mRNA expression levels relative to Day 17 values. Each value represents the mean ± SEM of 6 animals. *, significantly different (P < 0.05) from Day 17 values within groups; δ, significantly different (P < 0.05) from control values on the same day.
