8435
Our data constitute a starting point for studies to elucidate the molecular mechanism by which TGF-beta regulates IgA production .
 protein: IgA; protein: TGF-beta
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: IgA, TGF-beta 
Answer:
 protein: IgA; protein: TGF-beta