Observe the human immune response phagocytosis
Learn about the human immune response phagocytosis by watching time-lapse photography of a leukocyte, or white blood cell (globular structure), consuming bacteria.
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Contunico © ZDF Studios GmbH, MainzLearn about researching Magellanic penguins (Spheniscus magellanicus) on Magdalena Island in the Strait of Magellan, off the coast of Chile.
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Encyclopædia Britannica, Inc.Sometimes plants bite back.
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Encyclopædia Britannica, Inc.Scientists are the ones searching for tsunamis, not surfers.
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Encyclopædia Britannica, Inc.In a circuit through the cardiovascular system, red blood cells transport oxygen from the lungs to the body tissues and carry carbon dioxide from the body tissues back to the lungs.
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© American Chemical Society (A Britannica Publishing Partner)Learn what allergies are and what causes them.
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Encyclopædia Britannica, Inc.In a circuit through the cardiovascular system, red blood cells transport oxygen from the lungs to the body tissues and transport carbon dioxide from the body tissues to the lungs.
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© Behind the News (A Britannica Publishing Partner)Learn how blood donation works.
