LilshortiexD
Tuesday, January 10, 2012
BOW 7
vaccine is
any
preparation
used
as
a
preventive
inoculation
to
confer
immunity
against
a
specific
disease,usually
employing
an
innocuous
form
of
the
disease
agent,
as
killed
or
weakened
bacteria
or
viruses,
to
stimulate
antibody
production
http://dictionary.reference.com/browse/vaccine
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