While humans have red colored blood, other organisms like Crustaceans, spiders, squid, octopuses have blue
The adult human body contains approximately 1.325 gallons of blood. Blood makes up about 7 to 8 percent of a person's total body weight.
Blood circulating in your body is composed of about 55 percent plasma, 40 percent red blood cells, 4 percent platelets, and 1 percent white blood cell
It is well known that white blood cells are important for a healthy immune system
You may also be surprised to know that blood contains small amounts of gold. The human body has about 0.2 milligrams of gold
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