Human Genetics: Proceedings of the Fifth International Congress of Human Genetics, Mexico City, 10-15 October 1976

abnormalities activity addition agents alleles amniocentesis analysis antigens appears approach associated blood cancer cause cells chemical chromosome chromosome abnormalities Class common complex culture damage defects deficiency demonstrated determined diagnosis disease disorders distance Down's syndrome Editors effects environmental enzyme estimates et al evidence example expressed factors frequency function gene genetic groups human hybrids important incidence increased indicate individuals induced inheritance involved known lactose least less levels lines loci locus lymphocytes major maternal measures mechanisms methods mouse mutation Nature neural tube normal observed obtained occur origin parents patients phenotypes polymorphism population possible prenatal present Press probably problem protein recent REFERENCES region relatively repair reported response risk samples screening selection sensitivity shown single somatic specific structure studies suggested syndrome Table techniques trisomy tumors variants