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What Is Autism?

Autism is not a disease, but a developmental disorder of brain function. People with classical autism show three types of symptoms: impaired social interaction, problems with verbal and nonverbal ... Continue reading

Ultrasound In Medicine

In medical testing, ultrasound equipment is used to produce a sonogram, or a picture of organs inside the body. Ultrasound scanners do not use X-rays. They use waves of such high frequency that they ... Continue reading

Ultrasound image of human fetus.

There's No Such Thing as a Safe Suntan

Every time you step outdoors, you are bombarded by ultraviolet (UV) radiation from the sun. UV rays cause the number of free radicals in cells to increase. Free radicals are atoms or molecules that ... Continue reading

What Is A Cerebral Aneurysm?

A cerebral aneurysm is the dilation, bulging or ballooning out of part of the wall of a vein or artery in the brain. The disorder may result from congenital defects or from other conditions such as ... Continue reading