Another drug, azathioprine, has a similar immunosuppressing action and inhibits an enzyme that we need to synthesise DNA, and so it strongly inhibits cells, like T-cells and B-cells, that proliferate a lot during an immune response.

还有一种药，硫唑嘌呤，也有相似的免疫抑制作用，同时抑制合成DNA所需的一种酶，因此硫唑嘌呤能够强效抑制在免疫反应中大量增殖的T、B细胞。