2539
Novel membrane receptors for aldosterone in human lymphocytes : a 50 kDa protein on SDS-PAGE .
 ( cell type: human lymphocytes, None) , ( protein: 50 kDa protein, None) , ( protein: Novel membrane receptors, 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:
 ( cell type: human lymphocytes, None) , ( protein: 50 kDa protein, None) , ( protein: Novel membrane receptors, None) 