title: Ring chromosome 21 in a normal female.
abstract: In the present paper we report a phenotypically normal woman with a ring chromosome 21 in her karyotype, who sought genetic counseling because of her previous reproductive failure and whose third, prenatally diagnosed, pregnancy resulted in the delivery of a healthy and karyotypically normal boy.
mesh_terms: D000026:Abortion, Habitual / Q000235:genetics; D000328:Adult; D002869:Chromosome Aberrations; D002871:Chromosome Banding; D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D010375:Pedigree; D010641:Phenotype; D011247:Pregnancy