IgG
Constitutes the largest fraction of circulating antibody
Provides natural passive immunity to the developing fetus by crossing the placenta from mother to baby
Is formed late in the primary immune response and throughtout the secondary immune respoionse
Can be transferred from one individual to another to artificially transfer humoral immunity
IgM
Are secreted as pentamers with 10 antigen- binding sites, making them good at binding antigens together in a clump and activating complement.
Are the first antibodies secreted in response to a new antigen
Are retained as monomers on the surface of B cells as B cell antigen receptors
IgA
IgA prevents pathogens from entering the body
Are exported by the immune system into secretions that cover mucous membranes
Secreted into the muscosa of the GI Systems ,respiratory systems, genitourinary system also fround in saliva sweat and tears breast milk allows passive transfer of immunity from mother to baby after birth
IgE
Parasitic worms in the body initiates a serious of interactions within the immune system that results in the production of IgE
Key to the production of IgE are
IgE antibodies coat the worm to mark it for attack
Eosinophil kills the parasitic worm
Important to us when we get allergics- make allergens
IgD
Roles is not clear
Is located on the surface of navive b cells along with (IgM)
Acts as B cells antigen receptors and participates in activating the b cells

Plan
P-antibodies acting as