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In the current study, we undertook a biochemical analysis of IL-10 receptor expression on freshly isolated B-CLL cells and characterized the functional responsiveness of IL-10 binding to its constitutively expressed receptor .
 cell line: B-CLL cells; protein: IL-10 receptor; protein: constitutively expressed receptor; protein: IL-10
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: B-CLL cells, IL-10 receptor, constitutively expressed receptor, IL-10 
Answer:
 cell line: B-CLL cells; protein: IL-10 receptor; protein: constitutively expressed receptor; protein: IL-10