20288
A single component ( 4161 Da ) inhibited totally the ( 125 ) I - KTX binding and with high - affinity ( IC50 = 0 . 1 nM ) , while the two other components poorly competed with ( IC50 > 100 nM ) .
 Chemical: ( 125 ) I
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ( 125 ) I