12901
Progesterone acts distally to the initial steps of T cell receptor ( TCR )-mediated signal transduction , since it blocks sustained Ca2+ signals after thapsigargin stimulation , as well as oscillatory Ca2+ signals , but not the Ca2+ transient after TCR stimulation .
 ( protein: TCR, None) , ( protein: TCR, None) , ( protein: T cell receptor, 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: TCR, None) , ( protein: TCR, None) , ( protein: T cell receptor, None) 