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VIII.—Transuterine (“Internal”) Migration of Fertilised Ova in the Albino Rat*

Published online by Cambridge University Press:  11 June 2012

A. Young
Affiliation:
Department of Anatomy, University of Glasgow
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Synopsis

The passage of ova down the Fallopian tube and uterine horn of one side into the horn of the other side is generally referred to as transuterine migration. There is evidence that such transmigration can occur in a wide variety of animals—Ungulata, Carnivora, Cheiroptera, Insectivora and Primates (Boyd, Hamilton and Hammond, 1944; Marshall's Physiology of Reproduction, 1952). In all these forms the genital tract has a single supravaginal segment varying from a common cervical canal to the single uterine cavity of the primate uterus simplex. The uterus of the albino rat is generally described as “uterus duplex”, with separate cervical canals opening independently into the vagina, and it has been stated by Hanson and Boone (1925, 1926) and by Slonaker (1927) that there is no evidence that transuterine migration occurs in the albino rat. In the course of an experimental investigation of the vascular pattern in pregnancy in the rat, some results were obtained which indicate that transuterine migration can occur in the albino rat.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1953

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References

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