title: Human ring chromosomes: a report of five cases.
mesh_terms: D000015:Abnormalities, Multiple; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002900:Chromosomes, Human, 1-3; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male