In Vivo Versus in Vitro Studies
In vivo studies reveal that Rickettsia rickettsii invade endothelial lining of small to medium vessels in the human host, causing vascular permeability. When tested in vitro, it is shown that the bacterium infects every kind of cell of the mammalian host.
Read more about this topic: Rickettsia Rickettsii
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“What an admirable training is science for the more active warfare of life! Indeed, the unchallenged bravery which these studies imply, is far more impressive than the trumpeted valor of the warrior.”
—Henry David Thoreau (1817–1862)