title: 21 trisomy and prenatally diagnosed XXY in two consecutive pregnancies.
mesh_terms: D000032:Abortion, Therapeutic; D000328:Adult; D000649:Amniocentesis; D004314:Down Syndrome / Q000175:diagnosis / Q000235:genetics*; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008423:Maternal Age; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012728:Sex Chromatin