saliva

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Introduction References & Edit History Quick Facts & Related Topics

Videos

The science behind morning breath

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Macro Aedes aegypti Mosquito. Close up a Mosquito sucking human blood,

Why Do Mosquito Bites Itch?

Photo of the antacid Tums

How Do Antacids Work?

Hand washing. Healthcare worker washing hands in hospital sink under running water. contagious diseases wash hands, handwashing hygiene, virus, human health

17 Questions About Health and Wellness Answered

Discover

airplane in flight (plane, aircraft, flying)

7 Puzzling Plane Disappearances

Calendar marking march 15th

22 Questions About Time and Timekeeping Answered

Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

10 Famous Artworks by Leonardo da Vinci

World map. Continents. Oceans. Mendel thumb ok

Just How Many Oceans Are There?

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

11 Egyptian Gods and Goddesses

World Data Locator Map: Australia

Is Australia an Island?

saliva: Media

biochemistry

Videos

The science behind morning breath

The science behind morning breath

Learn what causes bad breath and how to prevent it.

Video: © American Chemical Society (A Britannica Publishing Partner)

VIEW MORE in these related Britannica articles: