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. 1976 May 6;168(2):261-70.
doi: 10.1007/BF00215882.

Effects of chronic exercise on the ultrastructure of the adrenocortical cells in the rat

R J Buuck, G D Tharp, J A Brumbaugh

Effects of chronic exercise on the ultrastructure of the adrenocortical cells in the rat

R J Buuck et al. Cell Tissue Res. .

Abstract

Four groups of male rats were exercised for periods of 2, 4, 6, and 8 weeks with controls in each group. As a result of chronic exercise there was an increase in the width of the zona fasciculata of the adrenal cortex. Also, there was an increase in the number and size of the mitochondria, and an increase in the quantity of smooth endoplasmic reticulum, and during the first 4 weeks of exercise an increase in the number of lipid droplets in the zona fasciculata. The close relationship between the smooth endoplasmic reticulum and the mitochondria, and the relationship between the smooth endoplasmic reticulum and the lipid droplets suggests a possible means for a transport mechanism for movement of precursors between these organelles.

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