Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.
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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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There are 20 feet of blood vessels in each square inch of human skin.
Development of an atherosclerotic plaque that progressively narrows the lumen of an artery to the po
Anterior and lateral views of the body illustrating directional terms.
Views of the Milky Way’s Central Regions
John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d