18436
A novel TLE ( Agacutase ) was purified from Deinagkistrodon acutus snake venom by the means of Sephadex G - 75 , DEAE - Sepharose FF , and Sephadex G - 25 column chromatography .
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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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