SEX-CHROMOSOME CHIMERISM (XX/XY) IN HETEROSEXUAL BOVINE TRIPLETS
スポンサーリンク
概要
- 論文の詳細を見る
The chromosome constitution of a set of bovine heterosexual triplets consisting of two freemartins and one male was studied by means of blood culture, colchicine treatment of bone marrow cells and tissue cultures from several organs. As controls, four multiparous cows, including one female from another heterosexual triplets origin and a set of homosexual triple females, were also studied chromosomally using the blood culture technique. The sexual organs of the freemartins were examined macroscopically and histologically. The results are summarized as follows : 1) Cultured leukocytes and bone marrow cells in both freemartins and the co-tripled male manifested 2A-XX/2A-XY chimerism. The chimera ratios were parallel with each other among these three individuals. Tissue cultures from thyroid, kidneys, lung, gonads and seminal vesicle-like structures of these animals failed to show chimerism. No chimerism was observed, on the other hand, in leukocyte cultures from the control animals. Thus, freemartins involved in heterosexual triplets can also be diagnosed chromosomally as well as in the case of twins. 2) Two freemartins submitted to this study considerably differed in the morphological characteristics of the sexual organs, despite having similar characters in sex-chromosome chimerism.
著者
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KANAGAWA Hiroshi
Department of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University
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ISHIKAWA Tsune
Department of Veterinary Obstetrics Faculty of Veterinary Medicine Hokkaido University
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KAWATA Keiichiro
Department of Veterinary Obstetrics Faculty of Veterinary Medicine Hokkaido University
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ONO Hitoshi
Department of Meat Animal Reproduction, Obihiro University of Agriculture and Veterinary Medicine
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Ono Hitoshi
Department Of Animal Reproduction School Of Veterinary Medicine Obihiro Zootechnical College
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Ishikawa Tsune
Departement D'obstetrique Faculte De Medecine Veterinaire Universite Du Hokkaido
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Kanagawa Hiroshi
Department Of Biomedical Science Ontario Veterinary College University Of Guelph
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MURAMOTO Jun-ichi
Zoological Institute, Faculty of Science, Hokkaido University
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Muramoto Jun-ichi
Zoological Institute Faculty Of Science Hokkaido University
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ISHIKAWA Tsune
Department of Veterinary Obstetrics, Faculty of Veterinary Medicine, Hokkaido University
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KAWATA Keiichiro
Department of Veterinary Obstetrics and Gynecology, Rakuno Gakuen University
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KAWATA Keiichiro
Department of Veterinary Obstetrics and Gynecology, Faculty of Veterinary Medicine, Rakuno Gakuen University
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