Fig. 1From: Monozygotic twins discordant for homologous Robertsonian translocation trisomy 21 of 46, XX, + 21, der (21;21) (q10; q10) in a twin-to-twin transfusion syndrome, case reportKaryotyping of the cells from twin B. A karyotype of 46, XX, + 21, der (21,21) (q10; q10) was visualized via G-banding techniquesBack to article page