AntimetabolitesAntimetabolites, AntineoplasticTetrahydrouridineTrabeculectomyFloxuridine6-MercaptopurineFluorouracilMethotrexateSurgical SpongesMitomycinLeukemia L1210CytarabineAntineoplastic AgentsThioguanineDeoxycytidineInosine MonophosphatePhosphoribosyl PyrophosphateVidarabine PhosphateDrug Screening Assays, Antitumor6-AminonicotinamideDrug SynergismPantothenic AcidTumor Cells, CulturedNeoplasmsFolic Acid AntagonistsNorleucineCell SurvivalPurinesCell DivisionPhosphonoacetic AcidThymidylate SynthaseXenograft Model Antitumor AssaysAzathioprineCell LineDrug Evaluation, PreclinicalStreptomycesGuanineCell CycleApoptosisCell Line, TumorLeukemia P388Antineoplastic Combined Chemotherapy ProtocolsAntibiotics, AntineoplasticMice, NudeSarcoma 180Neoplasms, ExperimentalKineticsNeoplasm TransplantationMelanoma, ExperimentalCancer Vaccines