Microorganisms and Disease
Type III secretion systems are used to inject "effector" proteins directly into a host cell. Salmonella uses a type III secretion system to help the pathogen to

activate T cells to proliferate and secrete cytokines
survive the acid pH of the stomach
survive within macrophages
secrete LT (heat labile toxin) and ST (heat stable toxin) into the lumen of the intestine

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Microorganisms and Disease
Which of the following is true regarding anthrax?

Anthrax is highly contagious
Anthrax is caused by a virus
Inhalation Anthrax requires infection with a large number of spores
Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis

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

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

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