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.

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。

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This is a sophisticated differential signaling system that we haven't previously known about.

这是一个我们先前不了解的精密复杂的微分信号系统。

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The new data indicate that leukotrienes, immune-system-signaling molecules previously thought to play a crucial role only in asthma, are also overabundant inside diseased arteries.

FORBES: Prevention Puzzle