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(A) In Frederick Griffith's transformation experiment,he injected mice with a mixture of heat-killed $S$-strain (virulent) and live $R$-strain (non-vi

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Live $S$-strain

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(A) In Frederick Griffith's transformation experiment,he injected mice with a mixture of heat-killed $S$-strain (virulent) and live $R$-strain (non-virulent) bacteria.Although the $S$-strain was heat-killed and the $R$-strain was non-virulent,the mice died.Upon examination of the dead mice,Griffith recovered live $S$-strain bacteria.This led to the conclusion that the $R$-strain bacteria had been 'transformed' by the heat-killed $S$-strain bacteria,acquiring the virulence trait.

In Griffith's experiment,which new bacteria were recovered from the dead mice?

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