title: A new ultramicrochemical assay for purine nucleoside phosphorylase.
mesh_terms: D002478:Cells, Cultured; D005347:Fibroblasts / Q000201:enzymology; D006801:Humans; D007154:Immune System Diseases / Q000201:enzymology; D008832:Microchemistry / Q000379:methods; D010430:Pentosyltransferases / Q000032:analysis*; D011683:Purine-Nucleoside Phosphorylase / Q000032:analysis*
chemical_list: D010430:Pentosyltransferases; D011683:Purine-Nucleoside Phosphorylase