Japanese Journal of Veterinary Research;Volume 26, Number 1-2

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HISTOLOGICAL STUDIES ON THE KINETICS OF THE SPERMATOGENESIS IN THE MINK (MUSTELA VISON) : VII CELLULAR ASSOCIATION IN THE SEMINIFEROUS EPITHELIUM IN THE PRE-BREEDING SEASON (16 MONTHS OLD)

DEGUCHI, Eisaburo

Permalink : http://hdl.handle.net/2115/2124
JaLCDOI : 10.14943/jjvr.26.1-2.1

Abstract

The cellular association of the seminiferous epithelium in five minks, 16 months old, was quantitatively observed. Two different types of cellular associations were found. One was quite similar to the cellular associations observed in the breeding season and could be divided into eight steps. The other did not correspond to any step. Significant differences were noted among the relative frequency of the eight steps from six sites of both testes. The decrease in the number of each generation of the spermatogenic cells was related to the degenerations of the primary spermatocytes at the pachytene phase in steps 6~8 and of the intermediate-type spermatogonia in step 6.

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