432
The combination of ICP47 and US11 rendered fibroblasts negative for surface class I MHC and allowed a class I MHC - low population of T cells to be sorted by flow cytometry .
 GENE: ICP47; GENE: US11; GENE: surface class I MHC; GENE: class I MHC
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: ICP47; GENE: US11; GENE: surface class I MHC; GENE: class I MHC