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Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

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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The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Gram-positive and Gram-negative bacteria. Gram-positive and Gram-negative bacteria.
Crystallized negative stain salts Crystallized negative stain salts
When the exhaust is rich, the PCM applies a negative current into the pump cell. When the exhaust is rich, the PCM applies a negative current into the pump cell.
Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ... Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ...
An example of feedback regulation of a hormone An example of feedback regulation of a hormone
Negative and positive feedback loops Negative and positive feedback loops
Video: Stress and Immune System Animation

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