Japanese Journal of Veterinary Research;Volume 5, Number 2

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STUDIES ON ECHINOCOCCOSIS V. : EXPERIMENTAL INFECTION OF THE SHEEP

YAMASHITA, Jiro;OHBAYASHI, Masashi;KONNO, Seiji

Permalink : http://hdl.handle.net/2115/1706
JaLCDOI : 10.14943/jjvr.5.2.43

Abstract

It is a well-known fact that Echinococcus or hydatid has been classified into two types according to morphological characters : Echinococcus unilocularis and E. multilocularis or E. alveolaris. However, on the other hand, the term "multilocular cyst" is also used for a form of Echinococcus unilocularis by some authors. Such circumstances are listed below. [numerical formula]Having taken many particulars into consideration, the present authors are adopting the former (I) system. Consequently they comprehend the Echinococcus alveolaris as a synonymous term of E. multilocularis, and they avoid terming a form of unilocular hydatid cyst as "multilocular." The authors in this report deal with the development of hydatid cyst within the body of sheep which were experimentally infected by Echinococcus granulosus. In the preceding report, it was stated that the hydatid cyst of mouse developed rapidly and established a spherical vesicle. In the sheep, however, the hydatid cyst manifested a different mode of development in contrast to the cyst in the mouse, namely-the hydatid cyst of the sheep showed a shape for which a suitable term would be "Echinococcus polymorphus."

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