Epstein Bar Virus (EBV) Causes Most of Us to Have

question 57

Multiple Choice

Epstein Bar Virus (EBV) causes most of us to have an episode of sore throat and swollen glands during early childhood. If we first become exposed to the virus during our teen years, however, EBV causes the syndrome we know as mononucleosis. However, in special circumstances, the same virus can be carcinogenic.
-A very rare human allele of a gene called XLP, or X-linked lymphoproliferative syndrome, causes a small number of people from many different parts of the world to get cancer following even childhood exposure to EBV. Given the previous information, what might be going on?

• A) The people must have previously had malaria.
• B) Their ancestors must be from sub-Saharan Africa or southeast Asia.
• C) They must be unable to mount an immune response to EBV.
• D) They must have severe combined immune deficiency (SCID).
• E) Their whole immune system must be overreplicating.

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