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In the study conducted by Fahimipour , a biomimetic porous TCP/alginate/gelatin scaffold containing PLGA ) microspheres for slow release of VEGF was processed through extrusion technology .
 concept or principle: biomimetic; engineering feature: scaffold; material: PLGA; concept or principle: microspheres; material: VEGF; concept or principle: processed; manufacturing process: extrusion
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:
 concept or principle: biomimetic; engineering feature: scaffold; material: PLGA; concept or principle: microspheres; material: VEGF; concept or principle: processed; manufacturing process: extrusion