A week after exposure, the victim's white blood cells create antibodies.

感染一周后 患者的白细胞会分泌出抗体。

Scientists say the health of the yeast improved greatly after exposure to the chemical extracts.

科学家介绍，接触到植物中的化学物质后，这种酵母的健康程度明显提高。

She suggests giving your plants some extra love and care for the entire season after exposure.

她建议在被烟雾影响后的整个季节，给你的植物一些额外的关爱和护理。

It says since January more than 200 people, including dozens of children have died in agony after exposure to chemicals released by bombs.

该组织称，自一月份以来已有超过200人由于接触炸弹释放的化学物质而痛苦死去，其中包括数十名儿童。

There is some evidence that T cells developed after exposure to other coronaviruses which cause the common cold could help fight off the new virus.

一些证据表明，接触引发普通感冒的其他冠状病毒后产生的T细胞，可能有助于对抗这种新病毒。

The risk of a heart attack increases 48 percent in the two hours after exposure and there is an increased risk even 24 hours after exposure.

接触废气两个小时之后，心脏病发作的危险性增加了4800，甚至经过廿四个小时之后也仍有增加心脏病发作的危险。

Symptoms can begin just minutes after exposure to allergens, and can persist for weeks at a time, affecting the ability to concentrate and sleep, and to attend work or school.

相应的临床症状可以在接触过敏原后数分钟内发生，每次持续数周，严重时可影响注意力和睡眠，甚至是正常的工作和学习。

This yeast had plaque deposits similar to those seen in Alzheimer's disease. Scientists say the health of the yeast improved greatly after exposure to the chemical extracts.

这种酵母菌菌斑的沉积与阿尔茨海默病相似。科学家们说，在接触了化学提取物后，酵母的帮助大大改善。

Morren found in several species of Oxalis that the leaves and their foot-stalks moved, especially after exposure to a hot sun, when they were gently and repeatedly touched, or when the plant was shaken.

Morren 在几种酢浆草属植物中发现， 叶子和它们的脚柄会移动， 尤其是在暴露在烈日下，当它们被轻轻地反复触摸， 或者当植物被摇动时。

We know enough about our nervous systems now that we have developed antidotes that can stop Sarin from interfering with enzymes but they're only effective when taken immediately after exposure, which is generally extremely impractical.

既然我们已经开发出可以阻止沙林干扰酶的解毒剂，那么我们对我们的神经系统已经足够了解了，但它们只有在暴露后立即服用才有效，这通常是极其不切实际的。