961
We show that IL-6 signaling leads to marked increases in the synthesis and secretion of Ig in clonal human B cell lines and newly isolated polyclonal B lymphocytes in vitro.
 cell type: isolated polyclonal B lymphocytes; protein: Ig; protein: IL-6; cell line: clonal human B cell lines
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: isolated polyclonal B lymphocytes, Ig, IL-6, clonal human B cell lines 
Answer:
 cell type: isolated polyclonal B lymphocytes; protein: Ig; protein: IL-6; cell line: clonal human B cell lines