a decreasing trendP < 0.05
The E 2 level, on the other hand, had a gradual increase from Day 7 to Day 18 after which it showed a decreasing trend (P < 0.05) (Figure 1B ).
The E 2 level, on the other hand, had a gradual increase from Day 7 to Day 18 after which it showed a decreasing trend (P < 0.05) (Figure 1B ).
Three other concentrations of E 2 at a lower level showed concentration dependent tendency of stimulation of SP cell proliferation although they did not reach statistical significance.