12904
Progesterone had little or no effect on a cloned voltage-gated Na+ channel , an inward rectifier K+ channel , or on lymphocyte Ca2+ and Cl- channels .
 ( protein: cloned voltage-gated Na+ channel, None) , ( protein: K+ channel, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: cloned voltage-gated Na+ channel, None) , ( protein: K+ channel, None) 