短语讲解：
1. The researchers say it may work against a number of other cancers, too, if it works in humans.
work against对…产生不利的作用和影响
例句：Some people work against this plan.
有些人竭力反对这一计划。
2. Vaccines boost the body's immune system to fight off a foreign invader.
fight off竭力摆脱〔驱走, 阻止, 回避…〕
例句：This is a possible cure to fight off cancer.
这也许是治愈癌症的良方。
3. That makes sense if the invader really is foreign - like influenza or malaria.
make sense有道理；有意义；讲得通
例句：This sentence doesn't make any sense.
这个句子没有意义。
4. So Gendler and her colleagues are focusing on a vaccine based on a protein called MUC1 that occurs on the surface of various kinds of tumors.
focus on对(某事或做某事)予以注意; 致力于
例句：Many firms are focusing on increasing their markets overseas.
许多商行都专注于扩大国外市场。
base on使建立在…基础上,立足
例句：Action should be based on solid facts.
行动应有确凿的事实为依据。
5. So, much smaller tumors compared with the control group of non-vaccinated mice.
compare with (把…)与…相比
例句：How does your new house compare with your old one?
你的新房子和你的旧房子比起来怎样?
6. If this turns out to be an effective vaccine in humans, Gendler says it might be used to help reduce the risk of cancer before it develops, for example, in women with a high risk of breast cancer.
turn out结果是, 原来是
例句：He said he was a doctor; but later he turned out to be a cheat.
他自称是个医生, 结果证明他是个骗子。
