受体是细胞因子与细胞连接的分子门。细胞因子是免疫系统的信号物质，它的产生是炎症反应的第一步。
Receptors are molecular doorways that cytokines use to attach to cells. Cytokines are immune system signaling chemicals and their production is a first step in causing inflammation.
第一信号为抗原与T细胞受体TCR的结合，第二信号为抗原递呈细胞上的协同刺激分子与T、B淋巴细胞上的受体结合。
The first signal is the binding of antigen with TCR on T cells. The second signal is the binding of co-stimulate on the APC with their receptors presenting on T and B lymphocytes.
当谈到植物的天然免疫系统时，不能不提到相互作用的两个方面：植物细胞的受体分子以及与之成对的入侵细菌特异性的信号分子。
Rice growing. Scientists have identified the bacterial signaling molecule that matches up with a specific receptor in rice plants to ward off a devastating disease known as bacterial blight of rice.
当谈到植物的天然免疫系统时，不能不提到相互作用的两个方面：植物细胞的受体分子以及与之成对的入侵细菌特异性的信号分子。
Rice growing. Scientists have identified the bacterial signaling molecule that matches up with a specific receptor in rice plants to ward off a devastating disease known as bacterial blight of rice.
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