Summary
The concentration and distribution of glycogen in relation to postnatal differentiation of the mouse Leydig cell are studied by biochemical and ultrastructural methods. Glycogen decreases to less than one third in the first twelve days after birth. This decrease is accompanied by modifications of its distribution in the cytoplasm. In the newborn it is abundant and arranged in clusters of beta particles; in the mature Leydig cell, glycogen is found scattered in extremely low concentration interspersed among elements of the endoplasmic reticulum.
The role of glycogen during Leydig cell differentiation can be interpreted as a source of energy and/or as a source of building material in the biogenesis of membranous components.
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This work was supported by Grant M 63,121 from the Population Council, U.S.A.
Fellow Consejo Nacional de Investigaciones Cientificas y Técnicas, Argentina.
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Russo, J. Glycogen content during the postnatal differentiation of the Leydig cell in the mouse testis. Z. Zellforsch. 104, 14–18 (1970). https://doi.org/10.1007/BF00340046
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DOI: https://doi.org/10.1007/BF00340046