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The largest primary dendritic arm spacing ( ∼41.7 μm ) and Nb-rich phases area fraction ( 3.68 % ) were found in the middle region of the aB-fabricated sample .
 biomedical: dendritic arm spacing; process parameter: area; concept or principle: sample
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:
 biomedical: dendritic arm spacing; process parameter: area; concept or principle: sample