这就是所谓的过敏性反应和可能发生几分钟内，以小时暴露的实质该人是过敏。
This is called anaphylaxis and can happen within minutes to hours of exposure to the substance that the person is allergic to.
呼叫999救护车立即正如你可能有一个一般性的过敏性反应，这可能是致命的。
Call 999 for an ambulance immediately as you may be having a generalised allergic reaction and this can be fatal.
参考译文： 全身性过敏反应是最严重的过敏性反应，其通常由黄蜂或蜜蜂叮咬或食用花生所致。
Anaphylaxis is the most severe allergic reaction of all and is most often triggered by wasp or bee stings or peanuts.
最危险的结果是过敏性反应。全身反应可能导致血压灾难性下降，并发呼吸困难，有时还会导致死亡。
The most dangerous result is anaphylaxis, a whole-body reaction which can end in a catastrophic fall in blood pressure combined with breathing difficulties, sometimes resulting in death.
使用抗组织胺不是治疗过敏性鼻炎的方法是因为它并不能完全阻止过敏性反应。
Antihistamines are not cures for allergic rhinitis because they do not stop the allergic reaction.
根据食品过敏反应和过敏性反应网络的统计，大约有1亿2千个美国人有食品过敏反应。
According to the food Allergy and Anaphylaxis Network, about 12 million Americans have food allergies.
方法：将受试豚鼠分为试验组和对照组，分别外用贞红生发酊及对照药物，在规定时间内观察豚鼠皮肤的刺激性、过敏性反应。
Method: Subjects guinea pigs were divided into test group and control group, separately for external use and control of drug. At the time guinea pigs skin irritation, allergic reaction.
快速扳扣的五点式头带与双层硅胶边使其与脸部紧密贴合，无过敏性反应。
The easy operate five-point straps as well as the double silica gel fringe would protect human face successfully and without any allergy reaction.
尽管是罕见的，但严重的敏感症反应，像过敏性反应或者恶化的哮喘即使在好的环境下也是十分严重的。
Although uncommon, severe allergic reactions, such as anaphylaxis or an exacerbation of asthma, are serious under the best of circumstances.
作为信号介导植保素合成等而直接介入或启动植物过敏性反应。 现初步认为“氧化突发”可能是细胞水平上植物对付病原菌侵染的第一步。
It has been assumed that "oxidative burst" may serve as a first line of plant defense against the invading pathogen at cell level.
Allerca公司最初是计划用基因静默技术（RNAi）来沉默编码Feld1（导致过敏性反应的蛋白）的基因。
Allerca initially planned to use the gene-silencing technique called RNA interference to quieten the gene that encodes Feld1, the protein that affects allergy sufferers.
空气花粉污染引起的疾病称为花粉症，即花粉过敏性反应。
空气花粉污染引起的疾病称为花粉症，即花粉过敏性反应。
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