The effect of parathion and DDT on cholinesterase activity in the roach (Periplaneta americana L).
D000818:Animals; D002802:Cholinesterases; D003634:DDT / Q000494:pharmacology*; D007313:Insecta; D010278:Parathion / Q000494:pharmacology*; D010526:Periplaneta
D010278:Parathion; D003634:DDT; D002802:Cholinesterases
CHOLINESTERASE; DDT/effects; INSECTS; PARATHION/effects