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Water-soluble glass patterned by 3D printing is a versatile tool for tissue engineering and microfluidics .
 Water-soluble glass, 3D printing, versatile tool, tissue engineering, microfluidics
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 Water-soluble glass, 3D printing, versatile tool, tissue engineering, microfluidics