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These two types of estrogen binding sites existed in human peripheral blood monocytes .
 cell type: peripheral blood monocytes; cell type: human peripheral blood monocytes
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cell type: peripheral blood monocytes; cell type: human peripheral blood monocytes