One obstacle is that in order for the gene called neurogenin3 to bond with a cell it needs to be transported by a virus which could be deadly to humans.
所存在的一个技术障碍是，为将所注射的叫神经配基3（neurogenin3）的基因与肝细胞结合，需要一种病毒来转运该基因，而该病毒对人类可能是致命的。
While this "bird flu" proves deadly to humans, killing more than half of its victims, it is kept in check by its inability to spread readily from human to human.
这“禽流感”证明对人是致死的，感染者一半以上可以被杀死，所幸它在人与人之间传播不易。
Instead of protecting volunteers from the deadly virus, the vaccine actually ended up infecting numerous participants during its large scale clinical trial on humans.
在大规模的人体临床试验中，该疫苗并没有保护自愿者免受致命病毒的侵害，实际上它对大量的志愿者没有效果。
The World Health Organization has raised its pandemic alert level for the deadly swine flu virus, signaling that the infection is spreading among humans in community-level outbreaks.
世界卫生组织提高致命猪流感病毒的疫情警戒级别，显示这种病毒正在社区中人与人之间扩散。
But public health experts fear the virus could mutate and spread among humans, causing a deadly pandemic.
公共卫生专家担心这种病毒可能变异，并在人类之间传播，引起致命的流行病。
Scientists have nicknamed them the "deadly dozen" : 12 diseases, lethal to humans and wildlife, that are increasing their geographical range.
科学家为对人类和野生动物均足以致命的12种疾病起了“12杀手”的绰号，它们的地域范围正在逐步扩大。
West Nile virus, which is carried by mosquitoes and infects mainly birds, but which can be deadly to humans, and African swine fever, are two diseases that could hit the UK in the coming year.
由蚊子携带传播的西尼罗河病毒，主要感染鸟类，但对人类也有致命的威胁。还有非洲猪热病，在来年可能会袭击英国。
We humans have millions of years of evolutionary baggage that makes us regard competition in a deadly light.
我们人类承载着百万年来的进化烙印，我们把竞争看成是残酷致命的事情。
People are also eating animals they find in the forests dead, which have died of Monkeypox that are transferred to humans and can be deadly.
人们食用在丛林中发现的动物尸体而感染致命的猴痘病毒。
When new drugs are tested on humans, they can sometimes be ineffective, and sometimes deadly.
【测药新招：人造血管速成术】新的药物进行人体试验时，有时效果甚微，有时会危害病人的生命。
The World Organisation for Animal Health said on Monday that the name swine flu is a misnomer as the deadly virus has origins among birds and humans as well as pigs.
世界动物卫生组织星期一表示，猪流感一词用得不当，因为这种病毒也源于人和禽类。
The World Organisation for Animal Health said on Monday that the name swine flu is a misnomer as the deadly virus has origins among birds and humans as well as pigs.
世界动物卫生组织星期一表示，猪流感一词用得不当，因为这种病毒也源于人和禽类。
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