Fig. 3.

(A) Effects of LH and/or OP on P4 production. (B) Effects of LH and/or OP on cell viability. The cells were treated with LH (10 ng/ml) alone or in combination with OP (100 μM) for 24 h. P4 production is expressed as a percentage of the control and represents the mean ± SEM of five separate experiments each performed in duplicate. Cell viability is expressed as a percentage of control and represents the mean ± SEM of five separate experiments each performed in triplicate. The mean P4 concentration in the control was 698.7 ± 42.8 ng/ml. Different letters indicate significant differences (P<0.05), as determined by ANOVA followed by Fisher's PLSD as a multiple comparison test.