title: Extended evaluation of previously reported twins with a ring 14 chromosome.
abstract: Extended studies of recently described twins with ring(14) are presented. A single C band and nucleolar organizer region were observed in the r(14). Gene marker evaluations are compatible with monozygosity of the twins.
mesh_terms: D002675:Child, Preschool; D002869:Chromosome Aberrations; D002901:Chromosomes, Human, 13-15; D004200:Diseases in Twins / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007621:Karyotyping; D011247:Pregnancy; D014427:Twins