chlordane, heptachlor, toxaphene, organochlorine, carbon tetrachloride, endrin, simazine, aldrin, trichloroethane, chlorpyrifos, organophosphate, contaminant, mirex, arsenic, tetrachlorethylene, pesticides, diquat, acrolein, parathion, biphenyl, toxicant, enterococcus, anabaena, carbon disulfide, pentachlorophenol, polychlorinated, polychlorinated biphenyl, enteric bacteria, dioxane, lindane, carbaryl, nitrates, malathion, paraquat, prussic acid, chlortetracycline, tobacco budworm, trichloroethylene, arsenate, endotoxins, aspergillus, atrazine, alkaloids, antimycin, pyrene, diethyl, toxoplasma, organophosphorus, orthophosphate, phytophthora, tetrachloroethylene, coli, coliform bacteria, gentian violet, toxin, diuron, juglone, phosphine, metaldehyde, dichlorodiphenyltrichloroethane, toxicity, dimethyl, perchlorates, fumigants, selenium, triazine, benzoates, urease, protozoans, acaricide, phenanthrene, arboviruses, benzyl, glycolipids, amphipods, hydroxides, pollutants, chlorobenzene, azole, nitrofuran, atopy, helminths, pyroxene, coumarin, methyl chloride, gallic acid, sulphate, residues, cyanuric acid, tremolite, vivax, sarcosine, bacteroides, protozoal, bile acid, escherichia coli, actinomycetes, xylenes, papillomas, aspergillosis, purines, contamination, ddt, pesticide, urea, cyanide, herbicides, insecticide, insecticides, nicotine, pcb, chlorine, fluoride, formaldehyde, herbicide, nitrite, pcbs, phosphorus, acetic, cadmium, colchicine, foliar, formic, fungicidal, hg, hydrochloric, tetracycline, 125, 90, adenine, alanine, alkaloid, amantadine, analgesic