I-cell disease: deficiency of extracellular hydrolase phosphorylation.
D000469:Alkaline Phosphatase; D002478:Cells, Cultured; D005347:Fibroblasts / Q000201:enzymology; D006596:Hexosaminidases / Q000172:deficiency*; D006801:Humans; D009081:Mucolipidoses / Q000201:enzymology*; D010766:Phosphorylation; D012867:Skin / Q000201:enzymology*
D000469:Alkaline Phosphatase; D006596:Hexosaminidases