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It is in such a context that biomimetic design can play a key role , in helping develop structure-function relationships based on observations of cellular materials in nature , and using these to guide selection of cellular materials .
 engineering feature: biomimetic design; material: cellular materials; material: cellular materials
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:
 engineering feature: biomimetic design; material: cellular materials; material: cellular materials