Kalousek D, Biddle C J, Rudner M, Arronet G H, Fraser F C
Hum Genet. 1978 Jul 12;43(1):107-10. doi: 10.1007/BF00396486.
This is a case report of 47,X,i(Xq),Y in a 24-year-old infertile male with Klinefelter's syndrome. C staining indicated that this isochromosome X had a single small centromere. BUdR incorporation revealed the isochromosome X to be late replicating.