An HIV strain resistant to all protease inhibitor drugs currently on the market turns up in San Francisco.
在美国旧金山，发现了一种对现有市场上的所有蛋白酶抑制剂都耐药的HIV病毒株。
2
Protease is a protein crucial to the life cycle of HIV, the AIDS-causing virus.
蛋白酶是一种蛋白质，对于引发AIDS的HIV病毒的生命周期至关重要。
3
There are a handful of drugs that combat specific viruses, such as the protease inhibitors used to control HIV infection, but these are relatively few in number and susceptible to viral resistance.