The genetic defect in the various types of human beta-galactosidase deficiency.
D000818:Animals; D002459:Cell Fusion; D002874:Chromosome Mapping; D002900:Chromosomes, Human, 1-3; D002904:Chromosomes, Human, 21-22 and Y; D006224:Cricetinae; D005347:Fibroblasts / Q000201:enzymology; D005733:Gangliosidoses / Q000235:genetics; D005796:Genes; D006801:Humans; D006822:Hybrid Cells; D007787:Lactose Intolerance; D009154:Mutation; D009439:Neuraminidase / Q000172:deficiency; D001616:beta-Galactosidase / Q000235:genetics
D009439:Neuraminidase; D001616:beta-Galactosidase