标签:bacteria 相关文章
A Laboratory Turns Deadly Insect Venom into Medicine 实验室将致命毒虫液转换为药物 To most of us, medicine comes from a drugstore. But originally, much of the medicine developed in the last century came from natural sources: plants, bact
如果你每天都在办公桌前工作,你要注意了.你知道你每天使用的办公桌上有多少细菌吗?数字惊人. 办公室键盘比马桶还脏 Daily Mail: Millions of us spend our days slaving over a keyboard. But lurking between the
HEALTH REPORT -May 29, 2002: Staph Vaccine By Nancy Steinbach This is the VOA Special English Health Report. American researchers say they have developed the first vaccine medicine that can prevent a
Ameloblasts- cells which differentiate from ectoderm and secrete enamel during tooth development. Amino acids - building blocks of proteins containing a carboxyl group (COOH) and an amino group(NH2) b
Abductors - muscle taking a limb or the jaw away from the body. Acetyl choline - Aneurotransmitter substance found at all cholinergic synapses including those of motoneurones at the neuromuscular junc
Health Report - Designing an Alternative to Antibiotics This is the VOA Special English Health Report. In nineteen twenty-eight a British scientist made a chance observation. He noticed that some mold had grown in bacteria in a culture plate in his l
AS IT IS 2015-06-05 Anthrax Shipments Incident Continues to Grow 误发活性炭疽菌事件持续增加 The United States military now says it might have sent live anthrax to 52 laboratories in the United States and three other countries. On Wednesd
Vidushi Sinha | Washington, DC 18 May 2010 The World Health Organization calls antibiotic resistance one of the three greatest threats to human health. Experts fear antibiotic resistance puts humans in danger of becoming nearly defenseless against so
胡须上的细菌帮助发现新抗生素 Widespread use of antibiotics for conditions that don't require them has spurred mutations in bacteria strains, turning them into so-called superbugs. 抗生素的滥用引发细菌产生变异,成为所谓的
In this season of flu and so many other germs, were told again and again that hand sanitizers and soap are the best defense. Last year, American spent more than 170 million dollars on hand sanitizers alone. So we wandered what works best and how do t
ARI SHAPIRO, HOST: The phrase endangered species often refers to charismatic animals like mountain gorillas or polar bears. Well, today scientists are reporting that a whole different type of extinction is happening inside our bodies. NPR's Michaelee
GUY RAZ, HOST: It's the TED Radio Hour from NPR. I'm Guy Raz. So remember your high school science class? Maybe you had a textbook that sounded something like this. TYLER DEWITT: Remember that a water molecule is polar, with a partial negative charge
RACHEL MARTIN, HOST: Go online, walk through any health store or supermarket, and you'll find all kinds of products being sold as probiotics. They're being promoted for all kinds of things - preventing upset stomachs, boosting the immune system, figh
患者、医生与科研人员需迅速应对细菌抗药性 The World Health Organization issued a wake-up call April 30 when it reported that we have now entered a post-antibiotic period. What this means is that some common bacterial infections no
As a major outbreak of a highly toxic strain of E. coli bacteria continues to sicken residents of Europe, medical experts are racing to find the source. 一种具高度毒性的大肠杆菌造成重大疫情,陆续使欧洲民众染病,现在医学
This is scientific american 60 second science. Im Chris Daliata. Got a minute? The pain relieving effects of drugs like ibuprofen are well known. But ibuprofen and its relatives, known as nonsteroid anti-inflammatory drugs, may someday have another u
Body odor. The smell of BO is unmistakable. And the culprit(犯人) behind that signature stench(恶臭) is a molecule called thioalcohol(硫醇). Our noses are so attuned(理解的) to it, we can pick up quantities as small as one part per trillion.
Microbes play a huge role in our nutrition, our immunity, maybe even our mental health. But we arent the only ones that rely on these armies of resident bacteria. Baby cockroaches, the ones that just emerge from the egg, don't have any gut bacteria.
Are you absent-minded? Sometimes I wish I were. So many things were achieved by people who just left something in their pocket or forgot to switch off a machine. Like what happened to this group of Swedish scientists. According to the British newspap
Today, a fever is an uncomfortable nuisance, but a hundred-plus years ago, fevers were often fatal. The difference between then and now is the class of drugs known as antibiotics. As the name implies, anti-biotics work against life, or, more specific