27444
Subcutaneous vaccination of mice with ova - nanoparticle conjugates elicited a significantly higher CD8 ( + ) T cell response ( 0 . 5 % IFN - gamma ( + ) of CD8 ( + ) ) compared to mice vaccinated with free ova or a physical mixture of the two components .
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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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