ChancroidHaemophilus ducreyiModels, BiologicalCross-Over StudiesDouble-Blind MethodPain MeasurementDisease Models, AnimalPhenotypeRodent DiseasesRodentiaCell Line, TumorCells, CulturedInflammationCell ProliferationTime FactorsRodent ControlMurinaeArvicolinaeMuridaeHantavirus InfectionsRats, Sprague-DawleyHantavirusSpecies SpecificityPeromyscusMice, Inbred C57BLSigmodontinaeRats, Inbred F344Carcinogenicity TestsRats, WistarAnimals, LaboratoryBehavior, AnimalMolecular Sequence DataAnimals, WildCarcinogensHantavirus Pulmonary SyndromeSciuridaeCricetinaePhylogenyInsectivoraBrainMole RatsRats, Long-EvansNeuronsEctoparasitic InfestationsRNA, MessengerDose-Response Relationship, DrugGerbillinaeModels, AnimalPlasmodium bergheiSiphonaptera