2273
The active compounds did not inhibit IL-1 -induced production of IL-6 in fibroblasts , showing the cell selectivity of the effect.
 cell type: fibroblasts; protein: IL-6; protein: IL-1
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: fibroblasts, IL-6, IL-1 
Answer:
 cell type: fibroblasts; protein: IL-6; protein: IL-1