Which of the following cells is infected by the HIV virus?
Red blood cells
All of the above
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T-helper cells also known as CD4 cells are white blood cells which protects our body from infection. When any virus or bacteria attacks the body, these cells become active and provides immunity to the body. The HIV cells on entering the body, attack and destroy the helper T- cells. Thus the immunity of the body is reduced in HIV infected persons.
Hence the correct option is D.
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Arrange in order of action.
(i) Activation of helper T cells
(ii) Release of cytokines
(iii) Activation of killer T cells
(iv) Release of perforins
(v) Bursting of infected cells
Defense against infection is the function of which of the following cells?
Q3. Look at the following statements about B Cells
1. They are a type of red blood cell of the lymphocyte subtype
2. Many B cells mature into what are called plasma cells that produce antibodies (proteins) necessary to fight off infections while other B cells mature into memory B cells.
3. B cells mature in the bone marrow, which is at the core of most bones
Which of the above statements are correct?
What is made by white blood cells to help fight off infection?
Which of the following is responsible for the formation of blood cells from stem cells?