AesculusAntimetabolitesAntimetabolites, AntineoplasticTetrahydrouridineTrabeculectomyFloxuridine6-MercaptopurineFluorouracilMethotrexateMitomycinSurgical SpongesLeukemia L1210CytarabineAntineoplastic AgentsThioguanineSubstance PDeoxycytidineInosine MonophosphatePhosphoribosyl PyrophosphateVidarabine PhosphateDrug Screening Assays, Antitumor6-AminonicotinamideDrug SynergismTumor Cells, CulturedNeoplasmsPantothenic AcidFolic Acid AntagonistsNorleucineCell SurvivalPurinesCell DivisionPhosphonoacetic AcidThymidylate SynthaseXenograft Model Antitumor AssaysCell LineAzathioprineDrug Evaluation, PreclinicalStreptomycesKiller Cells, NaturalGuanineSubstance-Related DisordersCell Cycle