February 22, 2017

Homework Help: Anatomy & Physiology

Posted by debbie on Sunday, August 10, 2008 at 4:13pm.

A woman who had measles as a child gets the disease again after her younger brother contracts the disease. This probably occure because od a defect in which mechanism?
A.viral mutation
B. Artificial acquired immunity
C. Natural acquired immunity
D. Passive immunity

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