7180
CTLA-4 -Mediated inhibition of early events of T cell proliferation .
 protein: CTLA-4
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: CTLA-4 
Answer:
 protein: CTLA-4