5501
RESULTS--Reactions in comedo carcinomas were significantly negative for estrogen receptor and progesterone receptor , and positive for p53 and HER-2/neu more often than the noncomedo variant .
 ( protein: HER-2/neu, None) , ( protein: p53, None) , ( protein: progesterone receptor, None) , ( protein: estrogen 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: HER-2/neu, None) , ( protein: p53, None) , ( protein: progesterone receptor, None) , ( protein: estrogen receptor, None) 