Immunoglobulins
:
____________________
:
Exocrine
secretions
,
milk
,
tears
,
and
saliva
____________________
:
Unknown
____________________
:
Lines
respiratory
and
intestinal
tracts
.
Associated
with
allergies
(
increased
eosinophils
)
,
asthma
,
Hay
fever
____________________
:
Major
antibody
against
virus
,
bacteria
,
toxins
.
Passes
placenta
____________________
:
Early
part
of
every
immune
respons
e
