6181
A detection limit of 3 x 10 ( 3 ) cfu mL ( - 1 ) was obtained for determination of E . coli O157 : H7 when used the lectin from T . vulgaris as the binding molecule .
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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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