Microorganisms and Disease
Lactoferrin helps to protect against pathogens by

lowering the pH
facilitating the growth of normal flora
blocking sebum production
sequestering Iron

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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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