Kanagawa,

Kanagawa,

Kanagawa,

Kanagawa,

probably due to double fertilization of the ovum.

J. Clin. Endocrinology 25: 114-126.

H., Kawata, K. and Ishikawa, T. (1965) Chromosome studies
on heterosexual twins in cattle. II. Significance of
sex-chromosome chimerism (XX/XY) in early diagnosis of
freemartin. Jap. J. Vet. Res. 13: 43-49.

H., Kawata, K., Ishikawa, T., Muramoto, J., and Ono, H.
(1965) Sex chromosome chimerism (XX/XY) in hetero-
sexual bovine triplets. Jap. J. Vet. Res. 13:121-126.
H., Kawata, K., Ishikawa, T., Odajima, T.and Inoue, T.
(1966) Chromosome studies on heterosexual twins in
cattle. III. Sex-chromosome chimerism (XX/XY) in
bone marrow specimens. Jap. J. Vet. Res. 14:123-125.
H., Muramoto, J., Kawata, K. and Ishikawa, T. (1965)
Chromosome studies on heterosexual twins in cattle.

1. Sex-chromosome chimerism (XX/XY). Jap. J. Vet.

Res. 13: 33-41.

Lejeune, J., Gautier, M. and Turpin, R. (1959) Les chromosomes

Lillie, F.

Malouf, N.

en culture de tissue. C.R. Acad. Sci., Paris, 248:602.
R. (1917) The freemartin: a study of the action of
sex hormones in the foetal life of cattle. J. exp.
Zool. 23: 371-452.

, Benirschke, K. and Hoefnagel, D. (1967) XX/XY
chimerism in a tricolored male cat. Cytogenetics 6:

228-241

866