One of Koch's contributions to microbiology can still be seen today in the
A) use of agar for cultures. B) microscope.
C) antibiotic penicillin. D) use of vaccines.
A
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A construction worker was accidentally shot with a nail gun. The nail penetrated the skull approximately ½ inch through the temporal region. Before your arrival, coworkers pulled the nail free. Based on the mechanism of injury, which sign provides the strongest evidence that the meningeal layers have been broken?
A) Blood draining from the puncture wound B) Crepitus of the skull at the injury site C) Deformity and depression at the injury site D) Cerebrospinal fluid oozing from the puncture wound
A patient with peripheral vascular disease and poor circulation who is experiencing tissue death due to ischemia is exhibiting which of the following conditions?
A) Decubitus ulcer B) Dry gangrene C) Wet gangrene D) Cellulitis