Within six months of effectively using methicillin to treat S. aureus infections in a community, all new infections were caused by MRSA. How can this result best be explained?
A) S. aureus can resist vaccines.
B) A patient must have become infected with MRSA from another community.
C) In response to the drug, S. aureus began making drug-resistant versions of the protein targeted by the drug.
D) Some drug-resistant bacteria were present at the start of treatment, and natural selection increased their frequency.
E) The drug caused the S. aureus DNA to change.
This squirrel, who was looking for a treat, has become desensitized to humans. The distance between
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The cell wall of a Gram-positive bacterium, S. aureus
The striking improvements in motor development in the early months
Hector makes payments of $2000.00 into an RRSP at the beginning of every six months starting ...
Can gene therapy be used to cure patients with HIV infections or to prevent HIV infections?