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In addition, a human breast carcinoma cell line ( ZR-75-1 ), which expresses the progesterone receptor , was analysed throughout.
 ZR-75-1, progesterone receptor, human breast carcinoma cell line
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 ZR-75-1, progesterone receptor, human breast carcinoma cell line