title: Serum immunoglobulin, complement C3, and salivary IgA levels in lead workers.
mesh_terms: D000328:Adult; D003176:Complement C3 / Q000032:analysis*; D004781:Environmental Exposure; D006801:Humans; D007109:Immunity / Q000187:drug effects; D007070:Immunoglobulin A / Q000032:analysis*; D007136:Immunoglobulins / Q000032:analysis*; D007854:Lead / Q000009:adverse effects* / Q000097:blood; D008297:Male; D008875:Middle Aged; D009787:Occupational Medicine; D012463:Saliva / Q000032:analysis*
chemical_list: D003176:Complement C3; D007070:Immunoglobulin A; D007136:Immunoglobulins; D007854:Lead