IMMUNOLOGY

Detailed explanation-1: -IgG is the antibody produced by most memory cells, but IgA-and IgE-expressing B cells play an important role in secondary immune response, too.

Detailed explanation-2: -IgG antibodies are involved in the secondary immune response (IgM is the main antibody involved in primary response). IgG can bind pathogens, like for example viruses, bacteria, and fungi, and thereby protects the body against infection and toxins.

Detailed explanation-3: -The secondary antibody response is characterized in its first few days by the production of small amounts of IgM antibody and larger amounts of IgG antibody, with some IgA and IgE.

Detailed explanation-4: -A sharp rise in IgG antibody after the secondary injection is typical of the secondary response. A definite but much lower anamnestic response for IgM and IgA is observed. The difference is so uniform and striking that it may well be characteristic for some primary responses in man.

Detailed explanation-5: -The secondary immune response is one of the most important features of immune systems. During the secondary immune response, the immune system can eliminate the antigen, which has been encountered by the individual during the primary invasion, more rapidly and efficiently.