title: [Studies on the urinary excretion of nicotine and cotinine in cigarette smokers].
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000378:metabolism / Q000652:urine*; D010947:Plants, Toxic; D011725:Pyridines / Q000378:metabolism / Q000652:urine; D011760:Pyrrolidinones / Q000378:metabolism / Q000652:urine*; D012907:Smoking / Q000503:physiopathology; D013997:Time Factors; D014026:Nicotiana
chemical_list: D011725:Pyridines; D011760:Pyrrolidinones; D009538:Nicotine