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The coating uniformly covered the external and internal surfaces of the implants ; and the coated porous structures exhibited improved biocompatibility .
 application: coating; concept or principle: surfaces; application: implants; application: coated; machanical property: biocompatibility
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 application: coating; concept or principle: surfaces; application: implants; application: coated; machanical property: biocompatibility