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Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Comparison of normal and sickle cell red blood cells. Comparison of normal and sickle cell red blood cells.
Normal lab values Normal lab values
Weak valve springs will produce a normal reading at idle, but as engine speed increases, the needle ... Weak valve springs will produce a normal reading at idle, but as engine speed increases, the needle ...
The traditional human karyotypes derived from a normal female and a normal male The traditional human karyotypes derived from a normal female and a normal male
Microarray procedure for analyzing gene expression in normal and cancer cells Microarray procedure for analyzing gene expression in normal and cancer cells
Video: Virtual Tour of the Eye Animation

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