 
			 
			MCQOPTIONS
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				| 1. | Which receptors open up during the calcium-induced calcium release? | 
| A. | Ryanodine receptors | 
| B. | IP<sub>3</sub> receptors | 
| C. | ligand-gated channels | 
| D. | C<sub>2</sub>H<sub>2</sub> receptors | 
| Answer» B. IP<sub>3</sub> receptors | |