The most common differential staining technique performed in…

The most common differential staining technique performed in microbiology labs around the world, used to differentiate between those bacteria that have only peptidoglycan in their cell walls and those that have both peptidoglycan and lipopolysaccharide, is the:

A patient comes to the ER complaining about a wound on their…

A patient comes to the ER complaining about a wound on their thigh that has recently turned black, forming an eschar.  After talking with the patient, you learn he is a farmhand that works with cattle and other livestock.  The doctor recommends an antibiotic prescription of broad-spectrum ciprofloxacin.  The causative agent is most likely: