7% of the body weight of the human body is blood.

One drop of the blood contains 250 million cells.

In our nerves, blood runs at 400 kilometers per hour and covers about 9600 kilometers in the entire day.

The body contains about 0.2 mg of gold and its highest amount is found in the blood.

A newborn baby has about 250ml blood, and a young man can have approximately 5 liters of blood.

Expressed are only 4 like (O, A, B, AB).

Most of the snakes have 1910 blood type. There are 810 types of blood type in cow and buffalo. There are 13 types of cats found in dogs and 11 types of cats.

The blood group O + is the most blood on this earth. The first blood bank in the world was built in the United States in 1937.

The first transfer of blood was approximately 350 years ago 15 It was on June 1667.