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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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There are approximately 3 million unintended pregnancies in the United States each year.

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When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

This white pine (Pinus strobus), towering above the canopy in Algonquin Provincial Park, is an examp This white pine (Pinus strobus), towering above the canopy in Algonquin Provincial Park, is an examp
African bush (savanna) elephant in Etosha National Park, Namibia. African bush (savanna) elephant in Etosha National Park, Namibia.
A Maasai giraffe in Mikumi National Park, Tanzania A Maasai giraffe in Mikumi National Park, Tanzania
Walt Disney Concert Hall Walt Disney Concert Hall
Chimpanzees in the Gombe National Park, Tanzania groom each other by holding an overhead branch with Chimpanzees in the Gombe National Park, Tanzania groom each other by holding an overhead branch with
Video: Nervous pathway to the Neuromuscular (NMJ)

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