Serum
Sickness,
Arthus
Phenomenon,
Systemic
Lupus
Erythematosus
Serum
sickness
is
a
common
manifestation
of
this
type
of
hypersensitivity.
It
develops
when
the
immune
system
produces
IgG
against
residual
proteins
in
serum
preparations.
Other
examples
of
this
type,
are
Arthus
phenomenon,
caused
by
antigens
in
the
dust
from
moldy
hay
and
in
dried
pigeon
faeces,
and
Systemic
lupus
erythematosus
(SLE),
an
autoimmune
disease
in
which
B-Iymphocytes
produce
IgG
upon
stimulation
by
nuclear
components
of
disintegrating
white
blood
cells
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