Tay-Sachs disease.
D000328:Adult; D005260:Female; D005817:Genetic Counseling; D006579:Heterozygote; D006801:Humans; D008064:Lipidoses / Q000453:epidemiology* / Q000235:genetics / Q000517:prevention & control; D008297:Male; D044469:Racial Groups; D013019:South Africa