title: The role of phosphohydrolases in the mechanism of resistance of neoplastic cells to 6-thiopurines.
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism*; D000469:Alkaline Phosphatase / Q000302:isolation & purification / Q000378:metabolism*; D000818:Animals; D002118:Calcium / Q000494:pharmacology; D002460:Cell Line / Q000201:enzymology; D002474:Cell-Free System; D004351:Drug Resistance; D005260:Female; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D008274:Magnesium / Q000494:pharmacology; D015122:Mercaptopurine / Q000494:pharmacology*; D051379:Mice; D009708:Nucleotidases / Q000302:isolation & purification; D012510:Sarcoma 180 / Q000201:enzymology*; D013347:Subcellular Fractions / Q000201:enzymology; D013866:Thioguanine / Q000494:pharmacology*
chemical_list: D015122:Mercaptopurine; D009708:Nucleotidases; D000469:Alkaline Phosphatase; D000135:Acid Phosphatase; D013866:Thioguanine; D008274:Magnesium; D002118:Calcium