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; protein: p53; protein: progesterone receptor; protein: estrogen receptor
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: HER-2/neu, p53, progesterone receptor, estrogen receptor 
Answer:
 protein: HER-2/neu; protein: p53; protein: progesterone receptor; protein: estrogen receptor