Topics from A to Z: Letter T

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    The innate and adaptive immune systems

    The immune system fights germs on the skin, in the tissues of the body, and in bodily fluids such as blood. It is made up of two parts: the innate (g...

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    How does the tongue work?

    The tongue is a true all-rounder. It is not only extremely flexible, allowing us to speak, swallow or suck in a coordinated way. It is also a sensory...