Vancomycin and daptomycin are two of the limited number of effective antibiotics against methicillin- resistant Staphylococcus aureus (MRSA) infection.
The predatory bacterium Bdellovibrio bacteriovorus eats its prey-larger bacteria, such as Escherichia coli, from the inside, an example of the imaginative lengths to which some prokaryotes will go to make a living.
Francisella tularensis is considered a select agent by the Centers for Disease Control and Prevention, due to its low infectious dose—as few as 10 organisms—via the lungs, and its potential as a biological threat agent.