Immunoglobulin
____________________
,
which
is
found
in
high
concentrations
in
the
mucous
membranes
,
particularly
those
lining
the
respiratory
passages
and
gastrointestinal
tract
,
as
well
as
in
____________________
and
tears
.
____________________
.
Immunoglobulin
____________________
,
the
most
abundant
type
of
antibody
,
is
found
in
all
body
fluids
and
protects
against
____________________
and
____________________
infections
,
transferred
via
placenta
.
Immunoglobulin
____________________
,
which
is
found
mainly
in
the
blood
and
lymph
fluid
,
is
the
first
to
be
made
by
the
body
to
fight
a
new
infection
.
Immunoglobulin
____________________
(
____________________
)
,
which
is
associated
mainly
with
____________________
reactions
It
is
found
in
the
____________________
,
skin
,
and
mucous
membranes
.
Immunoglobulin
____________________
,
which
exists
in
minute
amounts
in
the
blood
,
is
the
least
understood
antibody
.
