RT Journal Article SR Electronic T1 48,XXX, +18 double trisomy JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 309 OP 311 DO 10.1136/jmg.11.3.309 VO 11 IS 3 A1 Madahar, D. P. A1 Dosik, Harvey A1 Wexler, Irving YR 1974 UL http://jmg.bmj.com/content/11/3/309.abstract AB An infant who died at 127 days with gross congenital deformities is described. Cytogenetic analysis showed double trisomy of 18 and X which was confirmed by autoradiography and fluorescent banding techniques.