11912
Thus, NF-kappa B , a potent transcriptional activator of HIV expression , is also involved in the expression of RANTES , a chemokine that blocks infection by macrophage-tropic strains of HIV .
 protein: chemokine; protein: RANTES; protein: NF-kappa B
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: chemokine, RANTES, NF-kappa B 
Answer:
 protein: chemokine; protein: RANTES; protein: NF-kappa B