The chromosome localization of human HOX gene clusters has been reinve
stigated by fluorescence in situ hybridization (FISH). Three loci were
precisely localized in 7p15.3 (HOXA@), 17q21.3 (HOXB@) and 12q13.3 (H
OXC@). The localization of HOXD@ was confirmed to 2q31.