3714
A novel peptide ligand , A5 - 1 ( VILVLF ) , with high affinity to integrin alpha5beta1 was identified from the hexapeptide libraries with this chip - based screening method on the basis of a competitive inhibition assay .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
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