Masao Hamasaki

SEM surface morphology of the contractile cells in the rat seminiferous tubules

The SEM observation of the basal surface of the contractile cells in the boundary tissue of the seminiferous tubule of the rat has revealed that the contractile cells are extremely flat, vary in shape from rectangular to hexagonal, and are arranged close to each other, in the fashion of a tiled floor, around the seminiferous epithelium.

The vas deferens in man and monkey: spermiophagy in its ampulla

Extensive research concerning function and structure of the vas deferens has been accumulated in various mammalian species, including man, by using light and transmission electron microscopy. In recent years the vas has attracted the considerable attention of morphologists regarding the problems of fertility or sterility. More recently, surface topography of the vas deferens of rats, dogs and humans viewed by SEM has indicated that there exist not only species differences in luminal configuration, but regional variations along the longitudinal axis of the vas deferens (Nowell and Faulkin, 1974; Zaneveld and Brueschke, 1975; Hamilton and Cooper, 1978; Kennedy and Heidger, 1979).