Each Year There Are an Estimated 250,000 People Who Could

question 13

Multiple Choice

Each year there are an estimated 250,000 people who could benefit from a bone marrow transplant.A major challenge is finding a donor with the matching complex of Major Histocompatibility (MHC) proteins a person needs.Why is it important that the MHC proteins match between the donor and recipient?

• A)If they don't match,the donor's immune system will see the recipient's bone marrow as foreign.
• B)MHC proteins make antibodies which could attack the recipient's immune system.
• C)MHC proteins serve as inhibitors of the immune system.
• D)If they don't match,the recipient's immune system will see the donor's bone marrow as foreign.
• E)MHC proteins are used by cytotoxic T cells to kill bacteria,and if they don't match they won't work properly.

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