24342
These data support a model by which PD - 1 regulates islet - reactive CD4 ( + ) T cells in a cell intrinsic manner by suppressing proliferation , inhibiting infiltration of the pancreas , and limiting diabetes .
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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