Electrone microscopical investigations are indicated on numerous mitochondrias, with tubular or lammelar crists. Often reveals large electronic dence lipid droplets. During all periods of the observation in marmotes Leydig cells are obtained the argentoffine granules. Its containes more high during Jule-August, than in April. Carring out of the analysis evidences histo- and organotypical potencies of the endocrinocytes and interstional structures of marmotes testis had been demonstrated both of common priciples histogenesis and specific pecularities of marmots Leydigs cells.
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