IsocyanatesCyanatesPaintPolyurethanesToluene 2,4-DiisocyanateAir Pollutants, OccupationalAutomobilesOccupational ExposureThreshold Limit ValuesInhalation ExposureLacquerEnvironmental MonitoringRadioallergosorbent TestPolyhydroxyethyl MethacrylateAntisickling AgentsAsthma, OccupationalSkin AbsorptionRespiratory Protective DevicesNitrosourea CompoundsOccupational DiseasesRespiratory SystemChemical IndustryMetallurgyRats, Inbred F344IsothiocyanatesAerosolsImmunoglobulin EAsthmaBlood