title: Serum thymidine kinase levels in cancer patients.
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000201:enzymology*; D013937:Thymidine Kinase / Q000097:blood*
chemical_list: D013937:Thymidine Kinase