title: On a possible use of the root nodules of leguminous plants for research in neurology and psychiatry; preliminary report on a free porphyrin-hemoglobin system.
mesh_terms: D006454:Hemoglobins; D006801:Humans; D009462:Neurology; D011166:Porphyrins; D011570:Psychiatry; D012106:Research
chemical_list: D006454:Hemoglobins; D011166:Porphyrins