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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

A fixed action pattern elicited by a sign stimulus. A fixed action pattern elicited by a sign stimulus.
(a) Blue arrows (right side): External components of the innate immune system: human body with skin, ... (a) Blue arrows (right side): External components of the innate immune system: human body with skin, ...
After multiple injections of a local anesthetic, the patient developed herpetic lesions. After multiple injections of a local anesthetic, the patient developed herpetic lesions.
Sign Language Sign Language
Skin layer diagram Skin layer diagram
Albinos lack pigment in the skin, hair, and eyes. Albinos lack pigment in the skin, hair, and eyes.
Video: Types of Transport - Uniport, Antiport and Symport (Glucose and Na+K+ Transporters)

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