4. Ant ibodies to human dimeric IgA could potentially react with A. human IgM B.

Question

4. Ant ibodies to human dimeric IgA could potentially react with A. human IgM B. k light chains C. human IgG D. J chain E. A and B are correct F. C and D are correct G. none of the above are correct H. A, B, C and D are correct CHint: this one is tricky so be careful) S. The immunologically active portions of an antigen that can react wi th antibodies and T-cell antigen receptors are A. epitopes B. Fab fragments C. albumins D. globulins E. none of the above vtic vacuole Complete secretory ells Secretor LUMEN Secretory nt

Explanation / Answer

Answer 4. Option A

IGM is a pentamerous, it can accommodate IgA, because it has 10 antigen determinant sites.

Answer 5. Option b

Fragment for antigen binding is located on the antibodies, made up of the variable region.

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