21017
In addition , p53 / p65 could up - regulate Smad4 expression by inhibiting its target miR - 224 in GCs which contributed , at least partially , to the effects of miR - 224 and Smad4 on GC proliferation and E2 release .
 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