title: Blood serum thyroxine and triiodothyronine in men over sixty.
mesh_terms: D000367:Age Factors; D000368:Aged; D001797:Blood Protein Electrophoresis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood*
chemical_list: D014284:Triiodothyronine; D013974:Thyroxine