19430
We detected that GA had no effect on mRNA level of HIF - 1 alpha which targets VEGF gene , but the increase of HIF - 1 alpha protein expression in hypoxia was repressed by GA , which can be reversed by proteasomal inhibitor MG132 and siRNA of VHL .
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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