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blood group
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red blood cell
How much blood is in the human body?
Why is blood red?
Quizzes
Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
Read Next
Transfused Human blood in storage
The Strange, Grisly History of the First Blood Transfusion
Discover
Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson
Vietnam War Timeline
Horses. Equus caballus. Horse stable. A brown horse looks out from his stall through the window.
Horsing Around: 7 of the Weirdest Racehorse Names in History
Data analysis of the Super Bowl's "winningest" teams, game locations, MVP winners by position, teams with the most game losses. football, sports, infographic
From Sport to Spectacle: The History of the Super Bowl
Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI), taken late on July 13, 2015 from a distance of 289,000 miles
Why Is Pluto No Longer a Planet?
The Lost Colony of Roanoke, North Carolina, where 115 people mysteriously disappeared c. 1590. John White discovers the word Croatoan carved onto a tree upon his return to the deserted Roanoke Colony in 1590
The Lost Colony of Roanoke
Sailboat against a beautiful landscape
Which Waters Do You Pass Through When You “Sail the Seven Seas”?
In this aerial photo, structures are damaged and destroyed October 15, 2005 in Balakot, Pakistan. It is estimated that 90% of the city of Balakot was leveled by the earthquake. The death toll in the 7.6 magnitude earthquake that struck northern Pakistan on October 8, 2005 is believed to be 38,000 with at least 1,300 more dead in Indian Kashmir. SEE CONTENT NOTES.
6 of the World’s Deadliest Natural Disasters

blood group: Media

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Videos

How much blood is in the human body?
And how much do you really need?
Video: Encyclopædia Britannica, Inc.
Why is blood red?
Are you “red-y” to find out?
Video: Encyclopædia Britannica, Inc.

Images

red blood cell
Human red blood cells.
© Studio29ro/Dreamstime.com
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