Most
people have about 4-6 liters of blood. Your blood is made up of different kinds
of cells that float in a fluid called plasma:
●
Your red blood cells deliver oxygen to the various tissues in your body and
remove carbon dioxide.
●
Your white blood cells destroy invaders and fight infection.
●
Your platelets help your blood to clot.
●
Your plasma is a fluid made up of proteins and salts.
What
makes your blood different from someone else’s is your unique combination
of proteins
molecules, called antigens and antibodies.
Antigens live on the surface of your red blood cells. Antibodies are in your plasma.
The
combination of antigens and antibodies in your blood is the basis of your blood
type.
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