What is blood? Blood is made up of three basic types of cells: -
Red blood cells . The hemoglobin in the red blood cell carries
oxygen to all parts of your body to give you energy. If your red
blood cell count is low (anemia), you may look pale and feel
tired. If your hemoglobin is very low, you may need a blood
transfusion. - White blood cells. White blood cells fight
infections. The white blood cells that fight the best are called
neutrophils (segs). Your neutrophils are called "bands." -
Platelets. Platelets help prevent bleeding by clotting the
blood. These cells travel through your body in a white/yellow
liquid called plasma. When your platelet count is low you may
bleed when you get a cut, bruise or nose bleed. You may, if your
count is very low, need a platelet transfusion to prevent
bleeding. Where do blood cells come from? Your body is
constantly producing blood cells. Blood cells are made in the
bone marrow, the spongy tissue inside your bones. They come from
a type of cell called a stem cell. The s