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Active immunity is got from

$\begin{array}{1 1}(A)\;\text{Antibodies}\\(B)\;\text{Weakened germs in injection}\\(C)\;\text{Live germs in injection}\\(D)\;\text{Blood transfusion}\end{array} $

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Active immunity is got from weakened germs in injection
Hence (B) is the correct answer.
answered Jul 10, 2014 by sreemathi.v
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