1. vaccine
Scientists haven't found a vaccine for cancer yet.
smallpox vaccine
We can use her blood to make a vaccine.
The vaccine for this virus does not exist yet.
Jonas Salk developed the polio vaccine in 1952.
In 2010, there was a shortage of H1N1 vaccine.
They give most children a number of vaccines these days to stop them getting serious diseases.
There is no vaccine against HIV infection.
英語 "という言葉疫苗"(vaccine)集合で発生します。
Immune system - 免疫系统