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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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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 U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

The frequency of competition according to the number of species involved. The frequency of competition according to the number of species involved.
Large numbers of plant species can flower at once in this grassland in Kinsella, Alberta. Large numbers of plant species can flower at once in this grassland in Kinsella, Alberta.
Bluehead wrasse males with yellow females of the species. If the blueheaded male is removed from a t Bluehead wrasse males with yellow females of the species. If the blueheaded male is removed from a t
Human embryonic stem cells Human embryonic stem cells
Dimensions of quality of life affected by cancer Dimensions of quality of life affected by cancer
Four approaches to studying the evolution of human behavior. Four approaches to studying the evolution of human behavior.
Video: Contraction cycle of a sarcomere

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