Table 4.

The effect of serum from Menoprogen-fed rats on in vitro GC apoptosis ($\stackrel{-}{x}\pm \mathrm{s}\mathrm{d}$) (n = 8 per arm) using the MTT method. The final results were performed in triplicate and repeated three times.

Rat group	Optical density
Normal control	0.54 ± 0.04∗∗
NAM	0.45 ± 0.04
Low-dose medicated serum	0.62 ± 0.07∗∗
Middle-dose medicated serum	0.72 ± 0.07∗∗
High-dose medicated serum	0.51 ± 0.04∗∗

   ^∗∗ P < 0.01 versus NAM group.