[The role of Ca ion in regulating the contraction of smooth muscle cells].
D000818:Animals; D002118:Calcium / Q000378:metabolism / Q000502:physiology*; D006801:Humans; D007473:Ion Channels / Q000502:physiology; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000166:cytology / Q000502:physiology*
D007473:Ion Channels; D002118:Calcium