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Blood cell
Blood cell
refers to any type of cell normally found in
blood
. In
mammals
, these fall into three general categories:
red blood cells
, whose main purpose is the transport of
oxygen
white blood cells
, which act as immune cells and fight infection
Platelets
, which are actually fragments of the large bone marrow cells known as
megakaryocytes[?]
and are important in blood clotting
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