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To address this limitation , we investigate the stretchability of a set of cellular materials with conventional and novel cell architectures through 3D printing , experimental testing , and computational simulation .
 stretchability, set, cellular materials, cell, 3D printing, experimental, simulation
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:
 stretchability, set, cellular materials, cell, 3D printing, experimental, simulation