title: Prenatal detection of a fetus hemizygous for the fragile X-chromosome.
mesh_terms: D000649:Amniocentesis; D005260:Female; D005600:Fragile X Syndrome / Q000175:diagnosis* / Q000235:genetics; D006801:Humans; D007621:Karyotyping; D008297:Male; D011247:Pregnancy; D012729:Sex Chromosome Aberrations / Q000175:diagnosis*; D012730:Sex Chromosomes; D014960:X Chromosome