IsocyanatesToluene 2,4-DiisocyanateCyanatesToluenePolyurethanesAir Pollutants, OccupationalChemical IndustryOccupational ExposurePaintImmunoproteinsOccupational DiseasesLocal Lymph Node AssayAsthmaPhenylenediaminesRhodiumMethacholine ChlorideEnvironmental MonitoringInhalation ExposureMethacholine CompoundsAutomobilesButylaminesImmunoglobulin ETear GasesBronchiPeripheral Nervous System AgentsAlveolitis, Extrinsic AllergicIndolizidinesAllergensSerum AlbuminXylenes