5769
To determine the role of the ephrinB2 / EphB4 interaction in the skeleton , we used a specific inhibitor , soluble EphB4 ( sEphB4 ) , in vitro and in vivo .
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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:
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