Actions of calcium and certain multivalent cations on potassium contracture of guinea-pig's taenia coli.

@article{Imai1967ActionsOC,
  title={Actions of calcium and certain multivalent cations on potassium contracture of guinea-pig's taenia coli.},
  author={Shigemitsu Imai and Kazuo Takeda},
  journal={The Journal of physiology},
  year={1967},
  volume={190 1},
  pages={155-69}
}
1. Using a calcium buffer system, the effect of severe calcium lack on the shape of K-contracture of the guinea-pig's taenia coli was studied. Under conditions of calcium lack, the initial phasic response was preferentially affected and it disappeared completely at concentrations below 10(-7)M, while the ensuing tonic response persisted, though considerably diminished in size, even at the concentration of 10(-8)M.2. In calcium-free media, various multivalent cations, which according to Frank… CONTINUE READING

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