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Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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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.

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The horizontal fraction bar was introduced by the Arabs.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Viral replication Viral replication
The five stages of viral infection. The five stages of viral infection.
Selected Human Viral Diseases Selected Human Viral Diseases
Summary of Viral Hepatitis Types Summary of Viral Hepatitis Types
Western blot analysis of viral antigens. The nitrocellulose strips from the kit contain blotted ... Western blot analysis of viral antigens. The nitrocellulose strips from the kit contain blotted ...
Steps in most viral replication cycles Steps in most viral replication cycles
Video: Structures that affect circulation - heart and MABP

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