Functional differentiation of Leydig cells in the testis of the fetal monkey (Macaca fascicularis) J.-P. FOUQUET, D.-C. DANG and Nicole MEUSY-DESSOLLE Ann. Biol. anim. Bioch. Biophys., 18 5 (1978) 1205-1221 DOI: 10.1051/rnd:19780610