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The
size
of
blood
platelet
is
about
one-fourth
to
half
of
a
hemocyte,
its
diameter is 2-4 microns
with
a
thickness
of about
1
micron. Although blood platelet
is
pretty
small,
it
has
ample
quantity.
There are
about
100,000
to 300,000
blood platelet in every
cubic millimetre
of
blood.
Blood platelet
is
characterized
by
its
ability
to
adhere, aggregate,
release
and
transform. lts
major
function is
to participate in hemostasia and
blood
coagulation,
and
to
maintain
the
normal
organization
and permeability
of
blood
vessels.
Following
the
development
of
molecular
biology
and
contemporary medicine, the mystery of blood platelet
is
gradually
being uncovered.
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