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Case Reports
. 1979 Oct;43(2):89-96.
doi: 10.1111/j.1469-1809.1979.tb02000.x.

Unusual XX/XY chimerism

L Iselius, B Lambert, J Lindsten, P Tippett, J Gavin, G Daniels, A Yates, M Ritzén, B Sandstedt
Case Reports

Unusual XX/XY chimerism

L Iselius et al. Ann Hum Genet. 1979 Oct.

Abstract

Apparently identical twin boys are both XX/XY and have two populations, A1 and B, of cells in their peripheral blood. Chimerism in somatic tissue outside the blood cells can be demonstrated in only one of the twins. From analysis of chromosomes and many gene markers the mechanism of origin of the unusual twins remains unclear.

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