12378
Using a nuclear run-on assay , IL-4 stimulation was shown to enhance transcription by two- to threefold.
 protein: IL-4
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 
Answer:
 protein: IL-4