21333
The successful preparation of the two complete antigens was confirmed by UV spectral scanning , HPLC , production of antibodies with titer of 1 . 28 x 10 ( 4 ) from mice immunized with the two complete antigens , indirect ELISA and Western - blot .
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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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