McAlpine, James Natural products, both small and large, and a focus on cancer treatment. [electronic resource] - Current opinion in drug discovery & development Mar 2009 - 186-8 p. digital Publication Type: Editorial; Introductory Journal Article ISSN: 2040-3437 Subjects--Topical Terms: AnimalsAntineoplastic Agents--chemistryBiological Products--chemistryDrug DiscoveryHumansNeoplasms--drug therapy