9763
The integration of experimentally determined bioaffinity profiles across related and unrelated protein targets and chemogenomics analysis of fragment binding and protein structure allow the identification of : ( i ) unexpected similarities and differences in ligand binding properties , and ( ii ) subtle ligand affinity and selectivity cliffs .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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