whats most abundant in blood
IgG
provides passive immunity
IgG and IgA
can cross placenta
IgG
is in breast milk
IgA
present in secretions and protect mucosal surfaces
IgA
monomeric in the blood
IgG, IgA IgD and IgE
dimeric in mucosal layers
IgA
opsonise bacteria
IgG
neutralise Bacteria
IgG and IgA
activate complement
kinda IgG and IgM mostly
are expressed on naive b cells
IgM and IgD
is mainly a part of secondary response
IgG
is mainly apart of primary response
IgM
mediates allergic responses
IgE
targets multicellular parasites
IgE
mainly targets bacteria
IgM
target bacteria and virus
IgA and IgG
doesnt tend to circulate in blood, only signalling function
IgD