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c. plasma cell
antitoxin.
d. natural killer cell
23. Define allergy. How is the process of allergy like that
___ 14. Sensitivity to animal-derived immune serum
of immunity, and how do they differ?
may lead to a serious condition called
24. What is meant by rejection syndrome, and what is
17
a. serum sickness
being done to offset this syndrome?
b. hay fever
Conceptual Thinking
c. Kaposi sarcoma
25. While in the garden with his father Alek, a 4-year old
d. rejection syndrome
Caucasian boy was, in his own words,  kicked by a bee.
___ 15. An abnormal reactivity to one s own tissues is
called Shortly afterward, Alek developed hives near the affected
a. allergy
area, which he began to scratch. About ten minutes later,
b. autoimmunity
Alek s father noticed that his son was wheezing. What is
c. anaphylaxis
happening to Alek? Describe the inflammatory events
d. rejection
that are occurring in his body. How should Alek s father
respond?
Understanding Concepts
26. Why is HIV s attack on helper T cells so devastating
16. Describe four factors that influence the occurrence of
infection. to the entire immune system?
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