classification Chemicals fron: industrial、 medicine、 pesticide、 plants、 animals ● Organ or tissue involved: cardiovascular、 respiratory, nerve, liver, kidney blood Causation: occupational, daily life Onset: acute, subacute, chronicclassification  Chemicals from：industrial、medicine、 pesticide、 plants、 animals  Organ or tissue involved：cardiovascular、 respiratory, nerve, liver, kidney, blood  Causation：occupational, daily life  Onset：acute, subacute, chronic