There is evidence for more than one α1 acid glycoprotein (α1AGP) gene, and they all appear to be in close proximity. In situ hybridization of the cloned human cDNA pα1AGP-2 to human chromosomes indicates that the α1AGP genes are located between bands q31 and q34.1 on chromosome 9. This finding is in agreement with the previous assignment of the locus for αAGP to a linkage group with ABO and AK on chromoso