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  • Title: [Phosphatase activity in the forearm bones of rats after a flight aboard the biosatellite "Cosmos-936"].
    Author: Popova IA, Tigranian RA.
    Journal: Kosm Biol Aviakosm Med; 1981; 15(1):82-4. PubMed ID: 7218756.
    Abstract:
    Activities of alkaline and acid phosphatases in ulnar and radial bones of rats flown for 18.5 days aboard Cosmos-936 and kept in a ground-based mock-up were investigated. In both bones activity of acid phosphatase increased significantly and that of alkaline phosphatase decreased 6--10 hours postflight; in the synchronous experiment the only change was a decrease in the activity of alkaline phosphatase in the radius. An exposure of rats to artificial gravity did not normalize changes in phosphatase activities observed postflight. At R + 25 phosphatase activity in bones of flight rats returned to normal and even tended to exceed the control level in synchronous animals.
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