19435
Growth of HepG2 xenografts in BALB / cA nude mice was inhibited by GA and angiogenesis was repressed significantly in tumor xenografts by immunohistochemical staining of CD - 31 , a vascular endothelial marker , accompanied with decrease of HIF - 1 alpha and increase of PHD2 expression in tissue extracts .
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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