title: Echinacea: immune effects need more research.
mesh_terms: D020900:Echinacea; D006801:Humans; D007107:Immune System / Q000187:drug effects*; D008517:Phytotherapy; D028321:Plant Preparations / Q000494:pharmacology* / Q000627:therapeutic use*; D012106:Research
chemical_list: D028321:Plant Preparations