Microorganisms and Disease
Both Mycobacterium tuberculosis and Streptococcus pneumoniae

have polysaccharide capsules
have cell walls that contain a high content of mycolic acids
stay in the lung and rarely, if ever, enter the bloodstream
are acquired by inhalation

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Microorganisms and Disease
Plastic implants can pose a serious nosocomial infection problem because

phagocytes have trouble moving on the plastic surface
phagocytes have trouble engulfing bacteria embedded in a biofilm
infected implants usually have to be surgically removed
All of these

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