AP BIOLOGY

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THE HUMAN IMMUNE SYSTEM

IMMUNE RESPONSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In order to decrease the chances of tissue rejection in the recipient of an organ transplant, the recipient’s protein markers must be
A
recognized by the donated tissue
B
weakened through the use of drugs
C
matched closely to those of the donor
D
inactivated by the immune system
Explanation: 

Detailed explanation-1: -Medications After a Transplant. After an organ transplant, you will need to take immunosuppressant (anti-rejection) drugs. These drugs help prevent your immune system from attacking ("rejecting") the donor organ. Typically, they must be taken for the lifetime of your transplanted organ.

Detailed explanation-2: -Isograft: This type of transplant is done between a genetically identical donor and a recipient, such as an identical twin. There is virtually no risk of rejection in this case, as the body does not recognize an identical twin’s organ as foreign.

Detailed explanation-3: -HLA matching is used to match patients and donors for blood or marrow transplants. If 2 people share the same HLA type, they are considered a ‘match’.

Detailed explanation-4: -Cyclosporine (Neoral) Neoral is a drug that suppresses the immune system and is used to prevent rejection after transplant.

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