AnthraxBacillus anthracisBioterrorismAnthrax VaccinesInhalation ExposureBiological WarfareSpores, BacterialPostal ServiceSkin Diseases, BacterialBiological Warfare AgentsDistrict of ColumbiaRespiratory Tract InfectionsMediastinumAntibiotic ProphylaxisBacterial ToxinsAdministration, InhalationAnesthetics, InhalationAntigens, BacterialCiprofloxacinHalothaneDisease OutbreaksAnesthesia, InhalationIsofluraneMethyl EthersDisease Models, AnimalXenonLungAnestheticsEnfluraneAnti-Bacterial AgentsNitrous OxideAerosolsLymph NodesRabbitsMethoxyfluraneTime FactorsEthersLethal Dose 50Anesthesia, IntravenousReceptors, PeptideAnesthesia, Closed-CircuitPropofol