Fig. 8

Progesterone secretion (mean ± SEM, n = 4 independent replicates culture) from primary culture of llama granulosa cells collected from preovulatory follicles and treated with 30 ng/ml of LH or 50 ng/ml of β-NGF purified from llama seminal plasma for 48 h. Different superscripts, a, b indicate significant differences among treatment groups (P < 0.01)