Open AccessOn the occurrence of the œstrous cycle after X-ray sterilisation. Part III.— The periodicity of œstrus after sterilisation of the adult
Author(s) -
A. S. Parkes
Publication year - 1927
Publication title -
proceedings of the royal society of london. series b, containing papers of a biological character
Language(s) - English
Resource type - Journals
eISSN - 2053-9185
pISSN - 0950-1193
DOI - 10.1098/rspb.1927.0024
Subject(s) - germinal epithelium , ovary , epithelium , biology , follicular phase , andrology , irradiation , physiology , endocrinology , medicine , spermatogenesis , genetics , physics , nuclear physics
In Parts I and II (2, 3, 10, 11) of these series it has been shown that the destruction of the Graafian follicles in the young female mouse by exposure to X-rays does not inhibit the appearance of œstrous symptoms when the animals subsequently become mature. The conclusions arrived at were briefly as follows :— (a ) After irradiation of the young animal the follicles disintegrate and are re-absorbed, this process being accompanied in its later stages by the proliferation of new tissue from the germinal epithelium. (b ) When the animal becomes adult the ovary contains neither organised follicles nor corpora lutea vera, and consists largely of post-irradiation proliferation of the germinal epithelium. In spite of this, however, the cyclic phenomena of œstrus still appear.