Effects of Ionizing Radiation on Arylesterase and Cholinesterase.

Abstract
The effects of Co60 [gamma]-irradiation on arylesterase and cholinesterase of human blood plasma were compared using solid preparations of purified enzymes containing various amounts of water. In the case of cholinesterase a water content of 12 exerted maximum protection against irradiation. Such a protection by water was not observed with arylesterase. In aqueous solutions cholinesterase was more resistant to irradiation by [gamma]-rays than was arylesterase when irradiation was performed in an atmosphere of N.

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