21342
Trichoderma reesei exoglucanase ( CBH - I ) and endoglucanase ( EG - I ) bound strongly to both cellulose and lignin but EG - I exhibited a distinctive higher affinity with lignin , causing a more extensive inhibition of the cellulolytic reactions .
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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:
 None