Transgenic Plant
In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that

these proteins trigger the production of other antimicrobial defenses
expression of one PR protein provides high levels of protection against many pathogens
these provide no protection at all against pathogens
expression of two PR proteins provides some protection against a few pathogens

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Transgenic Plant
Transgenic plants

are used to produce human antibodies
are plants that differ in geographical locations
contain foreign genes in their cells
both (a) and (b)

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