Worldwide, cancer might become the leading cause of death because
a. environmental hazards are more prevalent.
b. physical activity levels are decreasing.
c. tobacco use is increasing.
d. sanitation is becoming poorer.
c
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Autoimmune gastritis causes pernicious megaloblastic anemia because in this disease these patients have autoantibodies that destroy
A. esophageal squamous epithelium B. gastric foveolar cells C. gastric chief cells D. gastric parietal cells E. gastrointestinal neuroendocrine cells
Which of the following vaccines is least likely to pose a risk in an individual with an immunodeficiency?
a. Sabin polio vaccine b. measles vaccine c. hepatitis B vaccine d. vaccinia vaccine e. yellow fever vaccine.
Peptic ulcers form in the
A. mouth and throat. B. lining of the stomach. C. small intestine. D. both b and c
Red blood cells start to develop in
A. long bones B. bone marrow C. compact bone D. flat bones