If PxQ = R then (a) pa=0 PG=R (b) P.R= QR (d) P+Q=6
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In biology, immunity is the capability of multicellular organisms to resist harmful microorganisms. Immunity involves both specific and nonspecific components. The nonspecific components act as barriers or eliminators of a wide range of pathogens irrespective of their antigenic make-up.
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