title: Synergistic and antagonistic responses of fern spore germination to combinations of copper, cadmium, and zinc.
mesh_terms: D002104:Cadmium / Q000633:toxicity*; D003300:Copper / Q000633:toxicity*; D004347:Drug Interactions; D018521:Plant Physiological Phenomena; D012044:Regression Analysis; D013170:Spores / Q000187:drug effects; D015032:Zinc / Q000633:toxicity*
chemical_list: D002104:Cadmium; D003300:Copper; D015032:Zinc