title: Atypical (Ea1) and fluoride-resistant (Ef1) cholinesterase genes: absent in a native American Indian population.
abstract: A population of 358 Navajo Indian children screened for serum cholinesterase variants failed to show the presence of either atypical or fluoride-resistant genes. This is the first significant anthropological observation of the absence of both variants in a native North American population.
mesh_terms: D000293:Adolescent; D000483:Alleles; D001130:Arizona; D002648:Child; D002802:Cholinesterases / Q000097:blood / Q000235:genetics*; D005459:Fluorides / Q000494:pharmacology; D005787:Gene Frequency; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D007198:Indians, North American
chemical_list: D002802:Cholinesterases; D005459:Fluorides