Gonadotropic cells of the rainbow trout pituitary during the annual cycle. Ultrastructure and hormone content J. PEUTE, H. J. Th. GOOS, Marielle G. A. DE BRUYN and P. G. W. J. VAN OORDT Ann. Biol. anim. Bioch. Biophys., 18 4 (1978) 905-910 DOI: 10.1051/rnd:19780523