Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
bone cancer
Parts of a bone.
The features found in a long bone.
Composition of a long bone
Rinne test. Bone conduction
Bone formation in normal mice and mutants for the runt gene Cbfa1