NeedlesInjections, SubcutaneousInjectionsBiopsy, NeedleInjections, IntramuscularInjections, IntravenousInjections, IntraperitonealInjections, IntralesionalInjections, Intra-ArticularInjections, IntradermalRats, Sprague-DawleyTime FactorsInjections, IntraventricularDisease Models, AnimalNeedle SharingInjections, EpiduralInjections, SpinalDose-Response Relationship, DrugInjections, JetRats, WistarSyringesInjections, Intra-ArterialIntravitreal InjectionsMice, Inbred BALB CMice, Inbred C57BLInjections, IntraocularBiopsy, Large-Core NeedleBiopsy, Fine-NeedleRats, Inbred StrainsSkinRecombinant ProteinsRandom AllocationMicroinjectionsLiverPainRabbitsTreatment OutcomeFlow Injection AnalysisDrug Administration RoutesPain MeasurementNeoplasm TransplantationNadroparinOrgan SizeTissue DistributionLidocaine1,2-DimethylhydrazineBody WeightAnimals, NewbornAnesthetics, LocalDrug Administration ScheduleSperm Injections, IntracytoplasmicSubstance Abuse, IntravenousMice, NudeImmunohistochemistryDouble-Blind MethodNeedlestick InjuriesSpleenInsulin, Long-ActingImmunizationLymph NodesMice, Inbred StrainsMice, Inbred ICRNitrosomethylurethaneEndoscopic Ultrasound-Guided Fine Needle AspirationRats, Inbred LewGenetic TherapyRats, Inbred F344Disposable EquipmentDelayed-Action PreparationsTurpentineRNA, MessengerPregnancyInsulin, Short-ActingNeoplasms, ExperimentalUltrasonography, InterventionalTransdermal PatchBrainCosmetic TechniquesNaloxoneVitreous BodyImmunoglobulin GGrowth HormoneInflammationAnalysis of VarianceFreund's AdjuvantDrugs, Chinese HerbalDogsBehavior, AnimalAntibody FormationAdministration, CutaneousOctreotideAdjuvants, ImmunologicEstradiolEquipment DesignGenetic VectorsInsulinNerve BlockDrug ToleranceMonocrotalineKidney