In situ hybridization of two cloned chromosome 7 sequences tightly linked to the cystic fibrosis locus

Abstract
Two DNA sequences closely linked to the cystic fibrosis locus have been sublocalized to 7q31.3→q32 by in situ hybridization. These findings are consistent with previously published maps of that region of human chromosome 7. The cystic fibrosis locus therefore maps to the 7q31.3→q32 region, a more distal location than had been inferred from previous data.