title: National Cancer Institute begins laetril clinical trial.
mesh_terms: D000678:Amygdalin / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006801:Humans; D009316:National Institutes of Health (U.S.); D009369:Neoplasms / Q000188:drug therapy*; D014481:United States
chemical_list: D000678:Amygdalin