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Tumor sections were stained for : endothelial cells with CD31 and PAS or hypoxia inducible factor 1alpha ( HIF ) .
 Anatomy: Tumor sections; Anatomy: endothelial cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: Tumor sections, endothelial cells 
Answer:
 Anatomy: Tumor sections; Anatomy: endothelial cells