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Did you know?

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.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

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

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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Water cabbage Water cabbage
Vapour-liquid equilibrium acetone + water Vapour-liquid equilibrium acetone + water
Attraction between water molecules showing polar covalent bonding. Attraction between water molecules showing polar covalent bonding.
Change in air temperature at various air flow rates for a 4 pass operation Change in air temperature at various air flow rates for a 4 pass operation
A Simplified Model of Information Flow in Human Memory A Simplified Model of Information Flow in Human Memory
Rubella rash in a young child. Rubella is also called 3-day measles or German measles. Rubella rash in a young child. Rubella is also called 3-day measles or German measles.
Video: DNA close up Animation

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