23
2.5 points
Immunoglobin Classes
bathes and protects mucosal surfaces from attachment of
pathogens.
free in plasma, potent agglutination agent. When bound to B cell
membrane, serves as antigen receptor.
about 80% of circulating antibodies
binds to mast cells and basophils, triggers release of histamine and
other inflammatory chemicals.
usually attached to B cell, important in B cell activation.