Problem 3
Discuss the roles of antibodies and antigens in an incompatible tissue transplant.
Problem 4
Explain what happens when a person develops a contact sensitivity to the poison oak plant. a. What causes the observed symptoms? b. How did the sensitivity develop? c. How might this person be desensitized to poison oak?
Problem 7
Summarize the causes of immunodeficiencies. What is the effect of an immunodeficiency?
Problem 8
In what ways do tumor cells differ antigenically from normal cells? Explain how tumor cells may be destroyed by the immune system.
Problem 9
If tumor cells can be destroyed by the immune system, how does cancer develop? What does immunotherapy involve?
