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In addition, monocytes and IFN-U937 cells both responded to red cells sensitized with antibodies against a variety of specificities of assumed (although not documented) clinical significance for blood transfusion recipients .
 protein: antibodies; cell type: monocytes; cell type: red cells; cell line: IFN-U937 cells
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:
 protein: antibodies; cell type: monocytes; cell type: red cells; cell line: IFN-U937 cells