1821
A transient transfection assay revealed that two signals, PMA and cAMP , are required for optimal activation of the IL-5 promoter .
 protein: IL-5; DNA: IL-5 promoter
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-5, IL-5 promoter 
Answer:
 protein: IL-5; DNA: IL-5 promoter