Ciliated cells in the rat testis effects of neonatal administration of estrogens

The presence of cells bearing solitary cilia has been studied in the testes of normal and neonatally estrogenized rats. Peritubular myoid cells and undifferentiated interstitial cells showed a higher frequency of cilia in estrogenized animals than in control ones, from 15 to 45 days of age, the differences being slighter at 90 days of age.