Microorganisms and Disease
The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is

heat killed virus
small dosage of wild-type live viruses
formalin-inactivated viruses
live attenuated strains of all three immunological types

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Microorganisms and Disease
The "A" subunit of diphtheria toxin

binds host cell receptors found on heart cells
lysis macrophages with the release of cytokines
forms cAMP that leads to fluid accumulation
cause ADP ribosylation of a factor involved in protein synthesis

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