17745
In this Concept , it is suggested that there is a developing library of cytophilic and cytophobic moieties , and how the cell affinity of nanomaterials functions at biointerfaces is discussed by exemplifying several applications , namely therapy , tissue engineering , and biosensors .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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