TY - GEN AU - Simpson,J L AU - Morillo-Cucci,G AU - Horwith,M AU - Stiefel,F H AU - Feldman,F AU - German,J TI - Abnormalities of human sex chromosomes. VI. Monozygotic twins with the complement 48,XXXY SN - 0018-7348 PY - 1974///0827 KW - Adult KW - Autoradiography KW - Biopsy KW - DNA Replication KW - Diseases in Twins KW - Female KW - Humans KW - Intellectual Disability KW - genetics KW - Karyotyping KW - Klinefelter Syndrome KW - Male KW - Maternal Age KW - Phenotype KW - Sex Chromosomes KW - Testis KW - pathology KW - Trisomy N1 - Publication Type: Journal Article ER -