AntimetabolitesAntimetabolites, AntineoplasticTetrahydrouridineFloxuridineTrabeculectomyFluorouracil6-MercaptopurineMitomycinInosine MonophosphateMethotrexateLeukemia L1210Phosphoribosyl PyrophosphateCytarabineAntineoplastic AgentsDeoxycytidineFolic Acid AntagonistsSurgical SpongesDrug Screening Assays, AntitumorDrug SynergismPurinesThioguanineTumor Cells, CulturedNeoplasmsCell SurvivalVidarabine Phosphate6-AminonicotinamideCell DivisionDrug Evaluation, PreclinicalPantothenic AcidNorleucineCell LineCell CyclePhosphonoacetic AcidThymidylate SynthaseXenograft Model Antitumor AssaysAzathioprineStreptomycesGuanineKinetics