6419
The generation of cell-mediated immunity against many infectious pathogens involves the production of interleukin-12 ( IL-12 ), a key signal of the innate immune system .
 protein: IL-12; protein: interleukin-12
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: IL-12, interleukin-12 
Answer:
 protein: IL-12; protein: interleukin-12