title: Letter: Cellular immune responsiveness in cigarette smokers.
mesh_terms: D001800:Blood Specimen Collection; D006801:Humans; D007111:Immunity, Cellular; D037102:Lectins; D008213:Lymphocyte Activation; D009538:Nicotine / Q000097:blood*; D012907:Smoking / Q000503:physiopathology*; D013997:Time Factors
chemical_list: D037102:Lectins; D009538:Nicotine