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Shao prepared by extrusion , four groups of bioceramic scaffolds for treatment of bone defects : Mg-substituted wollastonite-based ; TCP-based ; wollastonite-based ; and bredigite-based .
 manufacturing process: extrusion; biomedical: bioceramic scaffolds; biomedical: bone defects
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:
 manufacturing process: extrusion; biomedical: bioceramic scaffolds; biomedical: bone defects