HIV researchers hope to make a vaccine from a substance — usually a piece of the virus itself — that will provoke the immune system into releasing virus-fighting antibodies.
Some pandemic vaccines contain an adjuvant to reduce the amount of virus antigen to be used (an antigen is a substance capable of stimulating an immune response).
有些大流行性流感疫苗含有佐剂以便减少病毒抗原的使用量(抗原是能够刺激免疫反应的一种物质)。
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Fingolimod works by preventing immune cells from attacking myelin, the fatty substance that insulates nerves and helps them transmit impulses between the brain and the rest of the body.