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We investigated the mechanism by which ephrin - B1 promotes membrane ruffling in human aortic endothelial cells , because membrane ruffling heralds cell body migration .
 Anatomy: membrane; Anatomy: aortic endothelial cells; Anatomy: membrane; Anatomy: cell body
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: membrane; Anatomy: aortic endothelial cells; Anatomy: membrane; Anatomy: cell body