Which immune system cell is a nonspecific, phagocytic cell?
A) plasma cells
B) killer cells
C) macrophages
D) mast cells
C
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In which of the following disorders would the maternal serum level of a1-fetoprotein be elevated?
A. Neural tube defect. B. Cardiac ischemia. C. Down syndrome. D. Small cell lung carcinoma.
Falsely low blood cell counts can result if a ________-topped tube is underfilled.
Fill in the blank(s) with the appropriate word(s).
Which of the following high-frequency ventilators is capable of producing the highest frequency of ventilation?
A) high-frequency oscillatory ventilation (HFOV)B) high-frequency positive pressure ventilation (HFPPV) C) high-frequency flow interruption (HFFI) D) high-frequency jet ventilation (HFJV)
The optimum site of penetration for infiltration injections is at the ________
Fill in the blank(s) with correct word