-- red blood
cells, which carry oxygen throughout the body;
-- white blood
cells, which help fight infection; and,
, which stick together
at the site of a cut or wound to form a clot to stop the bleeding.
People who have thrombocytopenia don’t have enough platelets
to form a blood
clot, and so they may bleed excessively when they are cut.
2 -- How does thrombocytopenia occur?