That may be a common physiological mechanism which means organism can control the expression of genes and resist the virus infection, or the DNA mutation induced by during the period of evolution.
在进化上，这可能是生物调控基因表达及抵御病毒侵染或转座子诱导DNA突变的一种共有的生理机制。
2
These two new antibody discovery is important because the HIV virus is prone to mutation, and two new antibodies appear to resist any form of HIV.