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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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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.

Healthy workers of the invasive garden ant (Lasius neglectus) remove an infectious fungal pathogen Healthy workers of the invasive garden ant (Lasius neglectus) remove an infectious fungal pathogen
Heat Shock Proteins Heat Shock Proteins
Approaches for gathering an older adult assessment Approaches for gathering an older adult assessment
This exhaust manifold has a heat shield to help retain the heat and help reduce exhaust emissions. This exhaust manifold has a heat shield to help retain the heat and help reduce exhaust emissions.
Remove the fuel injector cleaning canister’s top and regulator assembly. Note that there is an ... Remove the fuel injector cleaning canister’s top and regulator assembly. Note that there is an ...
Exhaust emissions are very complex. When the air–fuel mixture becomes richer, some exhaust ... Exhaust emissions are very complex. When the air–fuel mixture becomes richer, some exhaust ...
Video: Introduction to Spirometry

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