Wilson M I
J Med Primatol. 1977;6(3):181-5. doi: 10.1159/000459741.
Observations of six female squirrel monkeys, Saimiri sciureus, indicate that the appearance of the external genitalia is hormone-dependent. Estradiol benzoate induced opening of the vagina, swelling of the labia, enlargement of urethral papilla, and copious discharge of thick white vaginal secretion in ovariectomized females.