Abstract
In the cells of the zona fasciculata of intact adult rats lysosomes can be found in medium amounts, measuring 0.2–0.4 μ in diameter. After treatment with ACTH, the lysosomes in the zona fasciculata of the intact animals increase in number and size, and lysosome-lipid conglomerates are formed. In hypophysectomized animals, the lysosomes in the zona fasciculata decrease in number and size in proportion to the time elapsed. Treatment with ACTH given 2 to 4 weeks after hypophysectomy, resulted in the increase in number and size of the lysosomes. Under such circumstances lysosomes appear in conspicuously large numbers around lipid droplets, which frequently coalesce with them. The possible role of lysosomes is discussed.
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