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Germ line C transcripts can be induced by IL-4 in the human B cell line , BL-2 .
 protein: IL-4; RNA: Germ line C transcripts; cell line: BL-2; cell line: human B cell line
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: IL-4, Germ line C transcripts, BL-2, human B cell line 
Answer:
 protein: IL-4; RNA: Germ line C transcripts; cell line: BL-2; cell line: human B cell line