title: Brain cholinesterase activity in birds after a city-wide aerial application of malathion.
mesh_terms: D000110:Acetylcholinesterase / Q000378:metabolism*; D000818:Animals; D000835:Animals, Wild; D001717:Birds; D001921:Brain / Q000201:enzymology; D008294:Malathion / Q000494:pharmacology*; D008350:Manitoba; D013997:Time Factors
chemical_list: D000110:Acetylcholinesterase; D008294:Malathion