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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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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.

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More than 4.4billion prescriptions were dispensed within the United States in 2016.

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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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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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