PT  - JOURNAL ARTICLE
AU  - A Avni
AU  - J Amir
AU  - E Wilunsky
AU  - M B Katznelson
AU  - S H Reisner
TI  - Down's syndrome in twins of unlike sex.
AID  - 10.1136/jmg.20.2.94
DP  - 1983 Apr 01
TA  - Journal of Medical Genetics
PG  - 94--96
VI  - 20
IP  - 2
4099  - http://jmg.bmj.com/content/20/2/94.short
4100  - http://jmg.bmj.com/content/20/2/94.full
SO  - J Med Genet1983 Apr 01; 20
AB  - The occurrence of Down's syndrome in both dizygotic twins appears to be very rare. A case of twins of unlike sex is reported, in which chromosomal analysis showed trisomy 21 in both of them, while the parental karyotypes were normal. This is the third reported case of such a constellation, and the second one in which infant and parental chromosomal analysis was done.