a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin;
"diphtheria toxoid"
toxoid的用法和樣例：
例句
用作名詞 (n.)
Toxoid is a substance that has been treated to destroy its toxic properties but retains the capacity to stimulate production of antitoxins,used in immunization. 類毒素是經過處理后已消除其毒素特性的一種物質，但仍保留有激發產生抗毒素的能力，用於免疫中。
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