HIV/AIDS Krok

HIV has gp41 and gp 120 on its surface interacts with target cells of an organism. Which of the following human lymphocyte antigens is gp 120 complementary bound with?

• CD8.

• CD19.

• CD 4

• CD28.

• CD3.

The immunoblot detected gp120 protein in the blood serum. This protein is typical for the following disease:

• Tuberculosis.

• Poliomyelitis.

• Syphilis.

• HIV

• Virus B hepatitis.

A patient consulted an immunologist about diarrhea, weight loss within several months, low-grade fever, enlarged lymph nodes. The doctor suspected HIV infection. What immunocompetent cells must be studied in the first place?

• Helper T-lymphocytes

• Suppressor T-lymphocytes

• B-lymphocytes

• Monocytes

• Plasma cells

Quite often, the cause of acquired immunodeficiencies is infectious damage to the body, in which pathogens directly multiply in the cells of the immune system and destroy them. Choose among the listed diseases in which the above occurs:

• Infectious mononucleosis, AIDS

• Tuberculosis, mycobacteriosis

• Poliomyelitis, hepatitis A

• Dysentery, cholera

• Q fever, typhus fever

Quite often, the cause of secondary immunodeficiency is infection, when pathogens directly spread in the cells of the immune system and destroy it. the following diseases are characterized:

• Infectious mononucleosis, AIDS

• Tuberculosis, mycobacteriosis

• Poliomyelitis, type A hepatitis

• Dysentery, cholera

• Q-febris, epidemic typhus

In a 25 years old patient from numerous skin pustules golden staphylococcus in association with epidermal staphylococcus is sowed, in the analysis of sputum a pneumonia of carinia is found, in feces - cryptosporidia, vulgar proteus and fungi of the genus Candida. In what disease is there such a multiple infection with opportunistic microorganisms?

• AIDS

• Diabetes

• Sepsis

• Dysbacteriosis

• Drug agranulocytosis

When a young man was examined in the AIDS center, a positive ELISA result was obtained with HIV antigens. Complaints about the state of health are absent. What can the positive result of ELISA testify?

• About HIV infection

• About AIDS

• About infection of HVB (hepatitis virus B)

• About the previous AIDS disease

• About the Persistence of the HVB (hepatitis virus B)

In a patient with clinical signs of immunodeficiency, immunological studies were performed. A significant decrease in the number of cells forming rosettes with erythrocytes of a ram was revealed. What conclusion should be drawn from the analysis data?

• Reduction of T-lymphocyte level

• Decrease in B-lymphocyte level

• Reduction in the level of natural killers (NK cells)

• Decrease in the level of the system of the complement

• Insufficiency of effector cells of humoral immunity

In a patient with clinical signs of primary immunodeficiency, violations of the function of antigen presentation of immunocompetent cells were detected. Defect structures of which cells are possible?

• Macrophages, monocytes

• T-lymphocytes

• B-lymphocytes

• Fibroblasts