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Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

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The average adult has about 21 square feet of skin.

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Trophic levels Trophic levels
Pulse oximetry. The small device provides a digital readout of oxygen levels in the blood. Pulse oximetry. The small device provides a digital readout of oxygen levels in the blood.
This chart illustrates the four quadrants in which we can place the relationships between the state This chart illustrates the four quadrants in which we can place the relationships between the state
Levels of protein structure: Primary structure Levels of protein structure: Primary structure
An overview of the levels of organization in nature An overview of the levels of organization in nature
Can chichenpox infection elevate the levels of cells? Can chichenpox infection elevate the levels of cells?
Video: Prone Position

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