Average number of grains per cell in serotonergic dorsal raphe cells from spayed and steroid-treated monkeys (n = 3 animals/spayed group; n = 4 animals/steroid treatment group) with five levels analyzed per animal. There was a significant increase in TPH mRNA with E and E+P.Asterisks, Significantly different from spayed group;p < 0.05. There was no significant difference between E- and E+P-treated groups.