名詞 immunosuppression:

1. lowering the body's normal immune response to invasion by foreign substances; can be deliberate (as in lowering the immune response to prevent rejection of a transplanted organ) or incidental (as a side effect of radiotherapy or chemotherapy for cancer)

im.mu.no.sup.pres.sion

n.（名詞）
Suppression of the immune response, as by drugs or radiation, in order to prevent the rejection of grafts or transplants or control autoimmune diseases.Also called immunodepression
免疫抑制：通過藥物或放射治療實(shí)現(xiàn)的對免疫反應(yīng)的抑制，目的在于阻止對移植物或移植的排斥或者來控制自身免疫病也作 immunodepression

【引伸】
im.munosuppres.sant
im.munosuppres.sive
adj.（形容詞）