5121
Stimulation of mouse B cells with anti- IgM or IgD antibodies , bacterial lipopolysaccharide , phorbol 12-myristate 13-acetate plus ionomycin , or CD40 ligand led to a five-fold to 35-fold decrease in BCL-6 mRNA levels .
 protein: CD40 ligand; cell type: mouse B cells; RNA: BCL-6 mRNA
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: CD40 ligand, mouse B cells, BCL-6 mRNA 
Answer:
 protein: CD40 ligand; cell type: mouse B cells; RNA: BCL-6 mRNA