KROK 1 2021 – Question 76 · KROK (Medicine) · Microbiology, Virology, and Immunology
A patient with clinical signs of a primary immunodeficiency has functionally disturbed mechanism of antigen-presentation to the immunocompetent cells. What cells are likely to have structural defects?
- A. Fibroblasts
- B. Macrophages, monocytes
- C. B-lymphocytes
- D. T-lymphocytes
- E. O-lymphocytes
Hint
Consider which cells engulf and process antigen and then display its fragments on MHC class II molecules to helper lymphocytes, linking innate and adaptive immunity.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Microbiology, Virology, and Immunology
- A 14-year-old boy was diagnosed with Hutchinson’s triad: barrel-shaped teeth, parenchymatous keratitis, and deafness. These signs are characteristic…
- Bacteriology testing is one of the methods for laboratory diagnostics of diphtheria. To grow the colonies of C. diphtheriae, it is necessary to know…
- During an outbreak of a hospital-acquired infection, pure cultures of S. aureus were obtained upon inoculation from the nasopharynxes of medical…
- A measles outbreak has occurred in a maternity clinic. What class of maternal antibodies can provide a newborn with immunity to measles virus?
- Feces of a child with an acute intestinal infection were inoculated onto Endo medium, which resulted in the growth of numerous raspberry-red…
- The ophthalmologist noticed a purulent discharge from the conjunctiva of a newborn. Microscopy of the smear obtained from the conjunctiva found…