Many naturally occurring environmental exposures increase risk for cancer. Residents in many parts of North America are exposed to low levels of the radioactive gas ________ in their homes, particularly in homes with basements.
A. dioxin
B. PCB
C. nitrate
D. radon
D. radon
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All of the following are correct in reference to type I interferons except _____
a. Type I interferons inhibit the replication of viruses. b. In the presence of type I interferons, virus-infected cells undergo cell-surface changes that render them more susceptible to attack by NK cells. c. Not only can most cells synthesize type I interferons, but they can also respond to them. d. The receptor for type I interferons is abundant in the cytosol. e. Type I interferons function in autocrine and paracrine fashions. f. Type I interferons promote NK-cell proliferation and differentiation into cytotoxic cells.
Which type of shock occurs as a result of injury to the spinal cord or brain?
1. Neurogenic 2. Cardiogenic 3. Anaphylactic 4. Hypovolemic
Which prefix means half?
A) mono- B) poly- C) peri- D) hemi-
A contract between an insurance company and a policyholder in which the insurance company agrees to reimburse a portion of the total medical bill after some deductible has been paid by the policyholder is referred to as ________.
A. a clean claim B. a fee schedule C. health insurance D. coinsurance