抗体通过与刺激其产生的特定抗原结合来执行其功能。

Antibodies perform their function by combining with the specific antigens that stimulated their production.

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然后是与载体结合的靶物质本身，他们是一组叫做半抗原的较小的分子。

Then there is the target itself, a set of smaller molecules called haptens that are attached to the carrier.

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NKT细胞是一种具有混合功能的细胞：它们既能如自然杀伤细胞般杀死入侵微生物，又能如t细胞般与抗原(能激发免疫反应的外源物质)结合。

NKT cells are hybrids: they kill invading microbes, like natural killer immune cells, but they also bind to antigens - foreign substances that trigger an immune response - like T-cells do.

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