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Cytochemical changes in frog liver during gametogenesis.

par Brachet, Jean
Référence Currents in modern biology, 2, 6, page (298-302)
Publication Publié, 1969-06

Article révisé par les pairs

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Résumé :

The changes undergone by the livers of female and male frogs freshly captured in nature at regular time intervals have been studied with cytochemical methods. At the time of vitellogenesis (especially in May), the livers of the females show hyperaemia, degenerative changes in the hepatocytes and accumulation of a secretion product in the liver. These changes are of much smaller magnitude in the males. It is suggested that the hormone induced secretion of lipophosphoprotein occurs by a merocrine process and that DNA from degenerating liver nuclei might become associated to the lipophosphoprotein and transported into the growing ovocytes. © 1968.