Review characteristics of different classes of immunoglobulins.
Which class represents the largest proportion in serum and directed against viruses, bacteria, and toxins?
What immunoglobulin crosses the placental barrier to protect the fetus during maturation of the immune system? (p.13)
- IgG = 75-80% of antibodies in serum
- Directed against viruses, bacteria, and toxins
- Only one that crosses the placental barrier – protection of fetus during maturation of immune system
- Activates complement
- Binds to macrophages