Slow reaction substance of anaphylaxis(SRS-A) release from lung tissues of the sensitized guinea pigs after antigen challenge was examined by bioassay.

用生物检定法评价两者对致敏豚鼠肺组织抗原攻击释放过敏性慢反应物质（SRS-A）的抑制作用；

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Sometimes it overreacts to what should be a perfectly innocuous food or other substance, causing an allergic reaction.

有时，它会对某种完全无害的食物或其它物质产生过度反应，导致过敏反应。

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When the substance enters the human body, it forces a reaction which the hybrid molecule itself controls.

当这种物质进入到人体，所发生的反应就会受这种合成分子的控制。

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That slows the next reaction, a problem because the substance that will become the drug is highly unstable and decomposing, sharply lowering the yield.

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An allergic reaction happens when the body identifies a normally harmless substance such as pollen as an invading germ.

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