1629
In vivo modification of major histocompatibility complex class II DRA promoter occupancy mediated by the AIR-1 trans-activator .
 protein: major histocompatibility complex class II; DNA: major histocompatibility complex class II DRA promoter; protein: AIR-1 trans-activator
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: major histocompatibility complex class II, major histocompatibility complex class II DRA promoter, AIR-1 trans-activator 
Answer:
 protein: major histocompatibility complex class II; DNA: major histocompatibility complex class II DRA promoter; protein: AIR-1 trans-activator