the signal level of ss mrna in cells of the pen was significantly greater in males than in proestrous females ( males , 210 +/- 7 grains/cell ; females , 158 +/- 5 grains/cell ; p less than 0.0005 ) , whereas no difference was observed in ss cells of the frontal cortex ( males , 100 +/- 0.8 grains/cell ; females , 99 +/- 5.9 grains/cell ) .
C0007610
cells of
C0007634
cell