9931
These RelB + APC were potent stimulators of the MLR .
 protein: RelB; cell type: RelB + APC; protein: MLR
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: RelB, RelB + APC, MLR 
Answer:
 protein: RelB; cell type: RelB + APC; protein: MLR