Explain how their structural difference relates to their functional difference.

In treating a woman for malignancy in the left breast, the surgeon removes some of her axillary lymph nodes. Following surgery, the patient experiences edema of her left arm. Explain why
.Anti-B antibodies of a type-A mother rarely affects the RBCs of a type B fetus. Yet anti-D antibodies of an Rh– woman sometimes cross the placenta and hemolyze the RBCs of an Rh+ fetus. Explain this difference based on your knowledge of the five immunoglobulin classes.
How does the structure of a B cell differ from that of a plasma cell? Explain how their structural difference relates to their functional difference.