title: The fragile site on the long arm of chromosome 16.
abstract: A boy and his father were found to have very small testes and a fragile site on the long arm of chromosome 16. This fragility would not have been detected in culture medium 199.
mesh_terms: D002648:Child; D002869:Chromosome Aberrations; D002902:Chromosomes, Human, 16-18; D006801:Humans; D008297:Male; D013737:Testis / Q000002:abnormalities*