胚上皮

Health nbsp; Economics The big story for Washington for 2002 is going to be the November elections. And while that’s a long way off for the rest of the country, it’s very much on politicians- mind

发表于:2018-11-28 / 阅读(189) / 评论(0) 分类 疯狂英语2002年

Federal officials are focusing on manufacturing and processing facilities as they work to get to the bottom of a salmonella outbreak in eggs. The Food and Drug Administration says there haven't been many standards in place for farms like the two in I

发表于:2018-12-02 / 阅读(114) / 评论(0) 分类 2010年NPR美国国家公共电台8月

Christopher Reeve: A True Superman Christopher Reeve, the cinematic 1 Superman who became a real-life inspiration for people with spinal 2 injuries through his painstaking struggle to overcome total p

发表于:2018-12-05 / 阅读(294) / 评论(0) 分类 英语沙龙2004全年合辑下

Agricultural officials say they think an organic farm in northern Germany was the source of the deadly E. coli outbreak that has sickened more than 2,000 people in Europe. Twenty-two people have died. Investigators traced the bacteria to beansprouts

发表于:2018-12-17 / 阅读(141) / 评论(0) 分类 2011年NPR美国国家公共电台6月

In a landmark development within stem cell research, scientists say theyve used a cloning technique to make embryonic stem cells that match a patients DNA. The journal Nature highlights a study that shows the potential for using the technology to rep

发表于:2018-12-17 / 阅读(251) / 评论(0) 分类 2011年NPR美国国家公共电台10月

HEALTH REPORT - Gene Therapy Used to Treat Cancer | Stem Cell Study Leads to Criticism, QuestionsBy VOA Staffs Broadcast: Wednesday, September 06, 2006 This is the VOA Special English Health Report. A

发表于:2019-01-02 / 阅读(168) / 评论(0) 分类 2006年慢速英语(九)月

Epidermal growth factor - a cytokine that stimulates epithelial cell proliferation. Epinephrine - a neurotransmitter substance found at all adrenergic synapses (nor epinephrine or epinephrine). It is

发表于:2019-01-03 / 阅读(181) / 评论(0) 分类 医务英语

Junctional epithelium - the epithelium which seals the base of the gingival sulcus against the tooth. Keratan sulphate - a glycosaminoglycan found in cartilage, with chondroitin sulphate. Keratin - a

发表于:2019-01-03 / 阅读(153) / 评论(0) 分类 医务英语

Quadrate - one of the bones which together with the articular bones and the dentary, made/make up a reptile's jaw. In mammals the quadrate bone is incorporated into the middle ear as the incus. Ramus

发表于:2019-01-03 / 阅读(191) / 评论(0) 分类 医务英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? One of the dreams of biomedical scientists is to be able to transform adult cells into other kinds of cells. And thus avoid some of the ethical concerns of working with

发表于:2019-01-08 / 阅读(163) / 评论(0) 分类 Scientific American(十一)月

President Obama says a preliminary agreement reached today with Russian President Dmitry Medvedev is an important step toward increasing nuclear security. We have signed a joint understanding for a follow-on treaty to the START agreement that will r

发表于:2019-01-08 / 阅读(134) / 评论(0) 分类 2009年NPR美国国家公共电台7月

President Barack Obama today moved to officially lift the Bush administration's restrictions on human embryonic stem cell research. The move reverses a 2001 directive from Mr. Obama's predecessor in the White House. At a signing ceremony in the East

发表于:2019-01-08 / 阅读(127) / 评论(0) 分类 2009年NPR美国国家公共电台3月

The State Department is warning Americans abroad to be on alert for possible protests against the US after a Florida church announced it would burn copies of the Koran this Saturday. Ahead of that, NPR's Michele Kelemen reports governments worldwide

发表于:2019-01-08 / 阅读(171) / 评论(0) 分类 2010年NPR美国国家公共电台9月

HEALTH REPORT - New Embryonic Stem Cell Lines Developed for Researchers By Paul Thompson Broadcast: Wednesday, August 11, 2004 This is Gwen Outen with the VOA Special English Health Report. Researcher

发表于:2019-01-08 / 阅读(152) / 评论(0) 分类 健康与经济

This is the VOA Special English Health Report. Bethesda, Maryland, near Washington, D.C., is home to the National Institutes of Health. N.I.H. calls itself the Nation's Medical Research Agency. But it supports research worldwide with its budget of a

发表于:2019-01-11 / 阅读(137) / 评论(0) 分类 VOA慢速英语2008年(十一)月

AS IT IS 2015-11-02 Can Fish Teach Humans to Regrow Teeth? 人类能学习鱼类的牙齿再生术么? Most people are born with two sets of teeth. They use baby teeth to break down food as children. As they become adults, the baby teeth are replaced

发表于:2019-01-12 / 阅读(102) / 评论(0) 分类 2015年VOA慢速英语(十一)月

By Ted Landphair Washington 26 July 2007 For a second time in a year, President Bush has vetoed a bill that would have sanctioned federally funded stem cell research using human embryos. His stance reflects conservatives' view that destroying life to

发表于:2019-01-12 / 阅读(171) / 评论(0) 分类 2007年VOA标准英语(七月)

An end to grey hair and crows-feet could be just 10 years away after scientists showed 科学家发现,动物的衰老过程有可能逆转。 it is possible to reverse ageing in animals. 从此以后,可能仅需10年,人类就可以告别白发

发表于:2019-02-01 / 阅读(126) / 评论(0) 分类 趣味英语

Finding a Healthier Lifestyle - Committing to Change Everyone wants to live a healthier lifestyle and everyone wants to look better in their swimsuit. However, many people don't know where to begin or what questions to ask. Six months ago I was in th

发表于:2019-02-08 / 阅读(186) / 评论(0) 分类 阅读空间

WASHINGTON, April 16 (Xinhua) -- Researchers at the University of Colorado (CU) have found that lack of a specific gene interrupts neural tube closure, a condition that can cause death or paralysis. The study was the cover story this week in the jour

发表于:2019-02-18 / 阅读(156) / 评论(0) 分类 英语新闻
学英语单词
149PM
Abligo
acid cellulose
address modifiable
adpressing
arbutus
Arlus
assured ore
batchy
benchmark rate
bimolecular collision
buckler-shaped
busy-ness
Carswell's grapes
Chinese sausage
citrus mealybug
columnar deflection
complex hybridization
coumarouna odoratas
current mode complementary transistor logic
current sheet
decook
deselect all
digital oscilloscope
DNA snippet
dragon-slayings
dressing code
equin-
estimated average annual usage
fashion-design
fenoverine
fingerpointing
flawe
FORTRAN 77character set
gamma acids
Gondar
Gongylonema hominis
growth zone
hold-over grid
Hornchurch
hydroxyl bond
in outline
incorporificated
infinite multiplicity
insulated-gate thin-film transistor (igtft)
Kyogle
Lemon Heights
liquid-hydrogen
main frequency furnace
Mammut americanum
mass-analyzed ion kinetic energy spectrometry
mass-production
near sisht
neurophysiologically
newcasting
nonmonomeric
Nothnagel syndrome
nozzle regulation
optimum combination
optimum density
oral cyst
paraguays
passive dispersal
pillorised
ponced
problem specification laguage
protopetroleum
punch trimming
real-time image processing
relative-address coding
rhr reactor shutdown cooling supply
ring-necked pheasants
sarti
scomer
sebek
selective coupler
senile blepharochalasis of upper eyelid
single-arm tiller
slightly-injured
snowman
sono
spaceshiplike
Stachys oblongifolia
Streptococcus salivarius
symbol(in the instruction handbook)
tandemocracy
Tantallon
tax accrued
temporary cache
teragray
testes-determination
thiemes
tie to
top story
tracer control
trading spot
vacuum circuit breaker
Vadstena
Varjisträsk
waterbuses
well-wishings
yenta, yente