BisacodylEnemaCatharticsGastric LavageShipsNaval MedicineFisheriesColon, AscendingAutomobilesPhenolphthaleinSubmarine MedicineBarium SulfateColonoscopyPicolinesDefecationLaxativesSimethiconeGasolineConstipationMotor VehiclesTherapeutic IrrigationPolyethylene GlycolsCitric AcidAquaporin 3Vehicle Emissions