Which of the following is TRUE regarding paroxysmal nocturnal hemoglobinuria (PNH)?
A) It can be diagnosed by the deficiency of CD55 and CD59 on red blood cells.
B) Symptoms include lysis of red blood cells with hemoglobin appearing in the urine and a
tendency to develop blood clots.
C) Red blood cells are deficient in the complement regulatory proteins DAF (decay
accelerating factor) and protectin.
D) All of the above.
D
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Activation of naïve B cells is a two-step process, during which
A. antigen triggers B-cell production of CCR7, which leads it to interact with T cells. B. antigen triggers T-cell production of CCR7, which recruits B cells. C. T-cell help stimulates B cells to produce CCR7, then divide. D. macrophages trigger B-cell production of CCR7, which leads it to interact with T cells. E. None of the above.
The combining form that means scanty is ________.
Fill in the blank(s) with the appropriate word(s).
Oral stimulation of the male genitals with the tongue, lips, and mouth is called ________.
Fill in the blank(s) with the appropriate word(s).
Burning sensation of pain:
a. Analgesia b. Cephalgia c. Anesthesia d. Causalgia e. Dysesthesia