Bordetella pertussis is characterized by rapid peripheral lymphocytosis and decreased cellularity of the lymph nodes. What can explain this phenomenon?
a. Loss of homing of B cells to lymphoid tissues
b. Loss of homing of T cells to lymphoid tissue
c. Abnormal homing of lymphocytes to the bone marrow
d. Increase of L-selectin expression by T cells
Correct Answer: B
You might also like to view...
A patient has a history of tendonitis to the right elbow. Based on this history, the EMT would understand that the:
A) Patient suffered a previous fracture to the right elbow B) Tissue connecting the muscle to the bones of the elbow is inflamed C) Muscles surrounding the elbow are inflamed D) Bones making up the elbow joint are infected
Which of the following is most beneficial in limiting the spread of nosocomial infections?
A) Limiting the patient's visitors B) Use of prophylactic antibiotics C) Use of standard and contact precautions D) Surveillance cultures of patients and personnel
Which of the following is the definition of a "drug monograph"?
Literature about a drug's ingredients, uses, and other information A picture of a drug from the manufacturer A price list for the drug from the manufacturer Literature about the drug manufacturer
Hypercapnia, which involves an increase in ____, is the key feature of ventilatory failure.
A. PCO2 B. PIO2 C. FIO2 D. PaCO2