2386
These signals contribute to the expression of co-stimulatory activity by APCs and have important consequences for cell effector function .
 cell type: APCs
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: APCs 
Answer:
 cell type: APCs