13532
These results therefore demonstrate that the MHC class II gene silencing in somatic cell hybrids is due to an active suppression of one of the promoters of the CIITA gene , mediated by the epithelial cell fusion partner .
 DNA: CIITA gene; DNA: promoters; cell type: epithelial cell fusion partner; cell line: somatic cell hybrids; protein: CIITA; protein: MHC class II
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: CIITA gene, promoters, epithelial cell fusion partner, somatic cell hybrids, CIITA, MHC class II 
Answer:
 DNA: CIITA gene; DNA: promoters; cell type: epithelial cell fusion partner; cell line: somatic cell hybrids; protein: CIITA; protein: MHC class II