24333
PD - 1 , but not PD - L1 , expressed by islet - reactive CD4 + T cells suppresses infiltration of the pancreas during Type 1 Diabetes .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None