837
Some of the epitopes were detectable only by immunoblotting with fusion proteins ; others were detectable only by an enzyme-linked immunosorbent assay ( ELISA ) with synthetic peptides .
 protein: fusion proteins
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: fusion proteins