STUDIES ON GUINEA PIG OOCYTES. I. ELECTRON MICROSCOPIC OBSERVATIONS ON THE DEVELOPMENT OF CYTOPLASMIC ORGANELLES IN OOCYTES OF PRIMORDIAL AND PRIMARY FOLLICLES

STUDIES ON GUINEA PIG OOCYTES. I. ELECTRON MICROSCOPIC OBSERVATIONS ON THE DEVELOPMENT OF CYTOPLASMIC ORGANELLES IN OOCYTES OF PRIMORDIAL AND PRIMARY FOLLICLES