Histological and histochemical observations on the atretic follicles induced by adenohypophysectomy in the hen.
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Histological and histochemical observations on hen's atretic follicles induced by adeno-hypophysectomy were carried out. Atresia was induced at 18hrs after the operation. In the follicles at middle phase of rapid growth the appearance of atresia was delayed. Thecal fibroblasts in the atretic follicles (bursting atresia) underwent degenerative changes characterized by cytoplasmic eosinophilia, nuclear pycnosis and increased acid phosphatase activity. It is suggested that the rupture of the thecal layer in the case of bursting atresia is induced by the breakdown of the tissue through digestion by lysosomal enzymes from the thecal fibroblasts.
- 日本家禽学会の論文
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