KROK 1 2009 – Question 117 · KROK (Medicine) · Microbiology, Virology, and Immunology
A patient with clinical presentations of immunodeficiency has undergone immunological tests. They revealed significant decrease in number of cells that form rosettes with sheep erythrocytes. What conclusion can be drawn on the ground of the analysis data?
- A. Decrease in T-lymphocyte level
- B. Decrease in complement system level
- C. Decrease in natural killer level (NK cells)
- D. Lack of effector cells of the humoral immunity
- E. Decrease in B-lymphocyte level
Hint
Ask which cell lineage carries the surface receptor that binds sheep red cells, and what a fall in rosette-forming cells therefore measures.
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
- During the regular sanitary-epidemiological inspection of a pharmacy, the bacteriological analysis of air was performed. The air was found to have…
- Following exposure to radiation a lot of mutant cells appeared in a patient. Some time later most of them were detected and destroyed by the…
- A 65-year-old man has purulent abscess on his neck. Analyses revealed a culture of gram-positive cocci with plasmocoagulase activity. This culture…
- After inoculation of the material obtained from the pharynx of an angina patient onto the blood-tellurite agar, grey colonies could be observed…
- Bacterioscopic examination of a smear from the pharynx of a diphtheria suspect revealed bacilli with volutine granules. What etiotropic drug should…
- Examination of a patient with pustular skin lesions allowed to isolate a causative agent that forms in the blood agar roundish yellow middle-sized…