Japanese Journal of Veterinary Research;Volume 10, Number 1

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HISTOLOGICAL STUDIES ON THE OVARIES OF SOWS : V. HISTOLOGICAL OBSERVATIONS OF THE VARIOUS CORPORA LUTEA IN THE OVARIES OF SOWS WHICH HAVE DEFINITE HISTORIES OF PARTURITION

YAMASHITA, Tadayuki

Permalink : http://hdl.handle.net/2115/3283
JaLCDOI : 10.14943/jjvr.10.1.1

Abstract

The results may be summarized as follows : 1. Light-red corpora lutea which were found in case 2 in macroscopical observations and young corpora lutea which were observed in case 3 by histological examinations corresponded well to the "freshly ruptured follicles" of CORNER and were definitely stated to be corpora lutea at a earliest proliferation stage. 2. In this observation of obsolete corpora lutea of three sows, arterioles of two types were newly added to ones of 14 types, which had already been classified by the present writer. 3. In obsolete corpora lutea the intercellular substances which stained deeply to resorsin-fuchsin were divided into three types. 4. Brown hyaline bodies and brown vascular bodies were considered to have originated from corpora lutea, into the central cavity of which conspicuous hemorrhage had occurred directly after ovulation. 5. In the present research it could be definitely stated for the first time on the basis of the collations with the history of parturitions that the present writer's so-called "vascular bodies" were obsolete corpora lutea of pregnancy in sows. 6. It was presumed that pregnant corpora lutea of sows were organized completely and disappeared within 3 years at least.

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