MethotrexateInjections, SubcutaneousInjectionsInjections, IntramuscularInjections, IntravenousInjections, IntraperitonealInjections, Intra-ArticularInjections, IntralesionalAntirheumatic AgentsRats, Sprague-DawleyInjections, IntradermalDose-Response Relationship, DrugPolyglutamic AcidTime FactorsInjections, SpinalDisease Models, AnimalInjections, IntraventricularRats, WistarTreatment OutcomeDrug Administration ScheduleFolic Acid AntagonistsInjections, EpiduralInjections, Intra-ArterialMice, Inbred BALB CMice, Inbred C57BLArthritis, RheumatoidTetrahydrofolate DehydrogenaseIntravitreal InjectionsRecombinant ProteinsRandom AllocationRats, Inbred StrainsSkinNeedlesDrug Therapy, CombinationInjections, JetLiverInjections, IntraocularDouble-Blind MethodDrug Administration RoutesNadroparinNeoplasm TransplantationRabbitsAntimetabolites, AntineoplasticImmunosuppressive AgentsAminopterin1,2-DimethylhydrazineLeukemia L1210Organ SizePainBody WeightTissue DistributionReduced Folate Carrier ProteinAdministration, OralAnimals, NewbornCyclophosphamideAntibodies, MonoclonalInsulin, Long-ActingImmunoglobulin GNitrosomethylurethaneMice, NudeFlow Injection AnalysisPain MeasurementMicroinjectionsRats, Inbred LewMice, Inbred StrainsInsulin, Short-ActingDelayed-Action PreparationsTrimetrexateTransdermal PatchNeoplasms, ExperimentalRats, Inbred F344SpleenTurpentineRNA, MessengerAntineoplastic Combined Chemotherapy ProtocolsImmunizationMice, Inbred ICRImmunohistochemistryFolic AcidPregnancyInflammationSubstance Abuse, IntravenousNaloxoneAntibody FormationLidocaineOctreotideGrowth HormoneMonocrotalineGenetic TherapyBrainCosmetic TechniquesSperm Injections, IntracytoplasmicDrugs, Chinese HerbalRats, HairlessAdministration, CutaneousInsulin LisproKidneyLeucovorinAnalysis of Variancegamma-Glutamyl Hydrolase