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Chapter Assessment Lesson 12.4
Learning Key Terms and Concepts
A cancer that has spread is said to be _____.
About what percentage of Americans have an allergy to one or more substances in the environment?
_____ is a hormone that opens up the airways and constricts the blood vessels.
A. Antihistamine
B. Anaphylaxis
C. Immunoglobulin
D. Epinephrine
A condition in which the immune system overreacts to an antigen that, in and of itself, does not pose an actual threat is called a(n) _____.
Which virus can lead to the development of AIDS?
Development of an immune system _____ of an antigen may reduce or eliminate an allergic response.
A severe allergic reaction that may include pulmonary obstruction and low blood pressure is called _____.
Thinking Critically
Describe the process by which a patient transitions from HIV-positive status to a diagnosis of AIDS.
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