The different classes of immunoglobulins differ in the sequences of their heavy chain constant regions. As a result, each class of antibody has distinct effector functions. Nonetheless, they are all found at about equal concentrations in the serum of healthy individuals

Most food absorption happens here

Antibodies have non-flexible arms that bind antigen

A mature B cell expresses:

The exon encoding the V region of an immunoglobulin protein is generated by a process of somatic recombination. This recombination event brings V gene and J gene segments together:

Somatic hypermutation occurs in which of the following:

What is true of the “four P’s” of problem-solving?

IgM is found at high concentrations in the serum, and is found as a very high molecular weight complex. This high molecular weight complex is composed of:

Which of the following is NOT a primary function of antibodies?

What is the difference between Mechanical and Chemical digestion?