1052
Thus, after 4 hr of exposure to SEA and SEB , the expression of IL-2R beta was down-regulated, IL-2R gamma was slightly up-regulated, while IL-2R alpha remained largely unaffected.
 protein: IL-2R alpha; protein: SEA; protein: IL-2R gamma; protein: SEB; protein: IL-2R beta
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: IL-2R alpha; protein: SEA; protein: IL-2R gamma; protein: SEB; protein: IL-2R beta