11907
Affinity purified recombinantly modified Cam - dis ( r - Cam - dis ) with a yield of 8 . 5 mg / L culture medium was cleaved from the fusion tags by enterokinase cleavage .
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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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