When blood is given to patients who are immuno deficient such as cancer patients or patients being o...........

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When blood is given to patients who are immuno-deficient such as cancer patients or patients being operated for organ transplants, blood needs to be irradiated with low doses of radiation. Why then high dosages of irradiation are not used to directly kill HIV viruses ?

1.It would kill blood cells along with HIV viruses.

2.It can cause immediate T- Lymphocyte proliferation in blood cells.

Which of the above is/are correct ?

1 only

2 only

Both 1 and 2

None

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Explanation:

Statement 1: Much higher dose of radiation will also kill the blood cells and will hence be useless. Hence this method cannot be resorted to for such a purpose. The same argument holds good for other bacteria and viruses also. This may lead to complications and may be fatal.

Statement 2: T lymphocyte, is a type of lymphocyte that plays a central role in cell-mediated immunity. The irradiation is done in order to inhibit T- Lymphocyte proliferation so that the therapy doesn’t fail due to body’s internal defence mechanisms.