title: THE FREQUENCY OF PTC TASTING HARD EAR WAX, COLOUR BLINDNESS AND OTHER GENETICAL CHARACTERS IN URBAN AND RURAL MEXICAN POPULATIONS.
mesh_terms: D000293:Adolescent; D002571:Cerumen; D002648:Child; D003117:Color Vision Defects; D003878:Dermatoglyphics; D005007:Ethnology; D005164:Factor IX; D005826:Genetics, Medical; D005955:Glucosephosphate Dehydrogenase Deficiency; D005958:Glucosephosphates; D006801:Humans; D008800:Mexico; D012423:Rural Health; D012424:Rural Population; D012924:Social Conditions; D013649:Taste; D013890:Thiourea
chemical_list: D005958:Glucosephosphates; D005164:Factor IX; D013890:Thiourea
keywords: ADOLESCENCE; CERUMEN; CHILD; COLOR BLINDNESS; DERMATOGLYPHICS; ETHNOLOGY; GENETICS, HUMAN; GLUCOSEPHOSPHATE DEHY- DROGENASE DEFICIENCY; MEXICO; RURAL HEALTH; SOCIAL CONDITIONS; TASTE; THIOUREA