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Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

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Cyanide works by making the human body unable to use oxygen.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
Color-enhanced magnetic resonance image (MRI) showing a sagittal view of the head. Color-enhanced magnetic resonance image (MRI) showing a sagittal view of the head.
The path of light through the cornea, iris, lens, and striking the retina. The path of light through the cornea, iris, lens, and striking the retina.
Electron microscopic image of dinoflagellates Electron microscopic image of dinoflagellates
Development of the light microscope Development of the light microscope
Flow chart for the diagnosis of hepatitis C. Hepatitis C reporting using the signal-tocutoff ratio. Flow chart for the diagnosis of hepatitis C. Hepatitis C reporting using the signal-tocutoff ratio.
Video: Non-specific disease resistance mechanisms & Skin's defense barriers

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