13396
Despite the absence of these ER peptides, the TAP1-/- cells were able to efficiently cross-prime E1A- and E1B- specific CTLs following immunization of syngeneic mice .
 cell type: TAP1-/- cells
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: TAP1-/- cells 
Answer:
 cell type: TAP1-/- cells