20227
In vivo , reduced numbers of CD8 ( + ) cells in Dcn ( - / - ) ears correlated with a reduced interferon - gamma ( Ifn - gamma ) and CXCL - 10 expression .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None