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  • Title: [Effect of manganese ions and verapamil on electrogenesis and contraction of ureter smooth muscle].
    Author: Shuba MF, Taranenko VM, Kochemasova NG.
    Journal: Fiziol Zh SSSR Im I M Sechenova; 1980 Aug; 66(8):1209-16. PubMed ID: 6252071.
    Abstract:
    Fast and slow calcium channels of the electrically excitable membrane of the ureter smooth muscle cells had different sensitivity to manganese ions and verapamil. Manganese ions (10(-4) M) selectively blocked the fast potential--dependent Ca--channels, Ca ions being necessary for phasic contraction, whereas verapamil (10(-9)--10(-8)) specifically blocked the slow potential--dependent CA--channels.
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