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Study of the effect of aluminium, fluoride-ions and fluoroaluminium on the passive transport of Ca2+ through the plasma membrane of the myometrium cells has shown that 10 microM of Al3+, 1 mM of F- and the both ions taken in the mentioned concentrations do not affect this process. At the same time 10 mM of F- as well as 10 microM of Al3+ together with 10 mM of F- inhibit a passive output of calcium from vesicles. The results obtained suppose that inhibitory regulation of the passive transport of calcium in the myometrium sarcolemma is executed through Gi-protein.
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