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Microbiology › View

An example of artificial active immunity would be

A. giving a person immune serum globulins to chickenpox virus after exposure to the disease.

B. chickenpox infection, followed by lifelong immunity.

C. a fetus acquiring maternal IgG to the chickenpox virus across the placenta.

D. chickenpox vaccine triggering extended immunity to chickenpox.

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Environment › View

Within the rhizosphere, plant roots have no effect on composition and density of soil microbial community.

A. TRUE

B. FALSE

C. Can’t say

D. May be

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