Key points are not available for this paper at this time.
MULTIPLE CaH ENTRY MECHANISMS ... . . . . . . . . 716 Diversity of Voltage-gated Ca2+ Channels (VOCs) 7 17 Common Features of Voltage-gated CaN Channels .. . . 72 1 Subunit Composition of DHP-sensitive CaN Channels 722 Structural Properties of DHP-resistant CaN Channels ........ . . . . .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 725 Receptor-operated CaN Channels (ROCs) 725 Second Messenger-operated CaN Channels (SMOCs) 726 Mechanically Operated CaN Channels (MOCs) 727 Tonically Active (background) Ca2+ Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 727 Gap Junction Channels ......... 727
Tsien et al. (Thu,) studied this question.