Fig. 2From: Growth hormone treatment improves the development of follicles and oocytes in prepubertal lambsSerum hormone levels in lambs during the period of treatment. a-c The changes of serum IGF-1, P4 and E2 levels in lambs in trial (1) d-f The changes of serum IGF-1, P4 and E2 levels in lambs in trial (2) *, P < 0.05. Arrow heads indicate the day of GH injectionBack to article page