17 Questions
What is the primary function of Th-1 cells during infections?
Involved in delayed hypersensitivity reactions against mycobacterial infections
What is the purpose of negative selection in the thymus?
To remove T cells carrying high affinity antigen receptors for self-antigens
What is the primary function of Th-2 cells?
Synthesizing gamma interferon to control pyogenic bacterial infections
What is the role of interleukin-2 in T-cell maturation?
Enhanced T-cell maturation
What is the characteristic of superantigens in the context of T-cell maturation?
They play an important role in both positive and negative selection
What is the primary function of Th-17 cells?
Producing interleukin-17 to stimulate CTLs
Which type of T cells retains the CD4 coreceptor?
T cells specific for MHC class I proteins
What is the outcome for T cells carrying high-affinity antigen receptors for self-antigens?
They undergo negative selection
Which cytokine is involved in the multiplication of CD8+ CTLs and NK cells?
IL-2
Which of the following statements about IL-12 is accurate?
It is produced by eosinophils and enhances the production of cells that mediate immediate hypersensitivity
What is the primary function of chemokines?
To attract immune cells to sites of inflammation
What is the role of chemokines in the inflammatory response?
They attract neutrophils to the site of bacterial infection
What is the result of chemokines inducing gene switching in B cells?
An increase in the amount of IgE synthesized
What is the diagnosis of the patient based on the examination results?
Kaposi's sarcoma
What is the recommended treatment for the patient based on the examination results?
Antiretroviral drugs and consultation with an oncologist
What is the significance of the CD4 count below 120 cl/ml in the patient's examination results?
It indicates the presence of HIV infection
What is the significance of the HV viral load of over 1100,000 copies/ml in the patient's examination results?
It indicates a high level of HIV replication
Test your knowledge on the events that occur in the thymus during T-cell maturation. Learn about the role of Th-2 cells and gamma interferon in controlling infections. Evaluate your understanding of the immune system and its functions.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
