Which of the following is TRUE concerning sickle cell anemia?
A) It is an autoimmune disease in which the body destroys its own hemoglobin.
B) It is a hereditary disease involving abnormal hemoglobin.
C) It is an acquired disease in which the body cannot absorb iron.
D) It is a hereditary disease involving lack of intrinsic factor
B
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All of the following are signs or symptoms of histamine release EXCEPT:
A) constriction of bronchioles. B) decreased vascular permeability. C) edema in the airway. D) peripheral vasodilation.
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Periodontal bone changes that may be recorded by radiographs include each of the following EXCEPT one. Which one is the EXCEPTION?
a. Amount of bone loss b. Distribution of bone loss c. Severity of bone loss d. Pattern of bone loss
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