Specific immunity in the extracellular fluid is provide by mainly
A)IgG and IgM
B)IgM and IgD
C)IgA and IgE
D)IgD and IgA
E)IgE and IgG

Question

Quizplus · Accepted Answer

IgG and IgM are the main antibodies involved in specific immunity in the extracellular fluid. IgG is the most abundant antibody in the blood and can activate complement and opsonize pathogens. IgM is the first antibody produced during an immune response and can also activate complement. IgD, IgA, and IgE have more specialized functions in mucosal immunity, allergic responses, and protection against parasitic infections, respectively.

Specific Immunity in the Extracellular Fluid Is Provide by Mainly