内皮外细胞

What Is Progeria? Progeria was first described in the nineteenth century. The mysterious disease is often thought of as premature aging. Children with progeria are normal for their first year of life, but then develop medical problems normally seen i

发表于:2018-12-31 / 阅读(144) / 评论(0) 分类 英语听力文摘 English Digest

By Melinda Smith Washington, DC 22 June 2006 watch Stem Cell report A new medical treatment injecting embryonic stem cells and other drugs into paralyzed mice has researchers wondering if it could eventually help humans suffering from Parkinson's an

发表于:2019-01-09 / 阅读(202) / 评论(0) 分类 2006年VOA标准英语(六月)

A: Nice to see you; how have you been feeling lately? B: I have been feeling great, Dr. Smith. A: I am happy that you have decided to come in for your annual physical. B: Yes, I am going on a cross-country bike ride on vacation and want to make sure

发表于:2019-01-11 / 阅读(179) / 评论(0) 分类 英语情景对话-健康

A: Hello, so how are we feeling today? B: Things are going well for me, Dr. Smith. A: Am I correct in thinking that you are here for your annual physical? B: Yes, I am applying for new health insurance, and I need a physical examination to qualify. A

发表于:2019-01-11 / 阅读(185) / 评论(0) 分类 英语情景对话-健康

A: Good morning, how are you doing today? B: I have been feeling pretty good, Dr. Smith. A: So, I can see by your chart that you are here for your annual physical. B: Yes, I am playing on the tennis team this year, and they are requiring me to get a

发表于:2019-01-11 / 阅读(198) / 评论(0) 分类 英语情景对话-健康

By Efam Dovi Accra 23 August 2006 In Ghana, a high court in the capital Accra Tuesday sentenced five robbers to more than 300 years in prison in what the police say is a clear sign the country is taking violent crime seriously. The spate of armed ro

发表于:2019-01-11 / 阅读(267) / 评论(0) 分类 2006年VOA标准英语(八月)

This is the VOA Special English Health Report. How important is your mobile phone, better known to Americans as a cell phone? MAN: I use my phone all the time. I'm always on my phone. WOMAN: It's kind of pretty much important to me because it's like

发表于:2019-01-12 / 阅读(173) / 评论(0) 分类 2011年VOA慢速英语(三)月

Power Your Laptop by Taking a Walk Scientists at the University of Wisconsin-Madison have developed a technology that turns human motion into electricity. In this week's journal Nature Communications, they describe how to power a cell phone or other

发表于:2019-01-14 / 阅读(184) / 评论(0) 分类 VOA标准英语2011年(八月)

Scientists Point to Possible Health Effects of Cell Phones This past May, in a major policy shift, the World Health Organization said electromagnetic fields produced by mobile phones are possibly carcinogenic. Although the International Association f

发表于:2019-01-14 / 阅读(190) / 评论(0) 分类 VOA标准英语2011年(八月)

a butterfly with glowing eyes Believe it or not, Monteiro and her team insert ed a new gene into the butterflys genetic sequenceone taken from a jellyfish . No, I know you're fooling. Actually I'm not. This gene codes for a green florescent protein t

发表于:2019-01-26 / 阅读(137) / 评论(0) 分类 英语听力文摘 English Digest

Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todayss Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm

发表于:2019-01-26 / 阅读(154) / 评论(0) 分类 英语听力文摘 English Digest

Fish live in water, but do they drink it? The answer is yes, but how fish drink water depends on where they live. Water gets into a fish's body through osmosis, the process in which water diffuses from a higher to a lower concentration. For example,

发表于:2019-01-26 / 阅读(152) / 评论(0) 分类 英语听力文摘 English Digest

Under normal circumstances, each of your brain cells allows various substances, such as sodium, calcium and potassium to permeate its outer cell membrane. Once inside the brain cell, these substances help give the cell stimulus it needs to function p

发表于:2019-01-26 / 阅读(162) / 评论(0) 分类 英语听力文摘 English Digest

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(338) / 评论(0) 分类 英语新闻

By Amanda Cassandra New York 09 November 2006 Movie star Robert Redford's Sundance Film Festival is teaming up with global cell phone operators to bring short films to cell phones to give people around the world access to independent films. Robert R

发表于:2019-02-05 / 阅读(196) / 评论(0) 分类 2006年VOA标准英语(十一月)

Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte

发表于:2019-02-07 / 阅读(292) / 评论(0) 分类 趣味英语

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(240) / 评论(0) 分类 英语新闻

Topics: Alcatraz; The Simpsons; using negation with an infinitive; heaven versus heavens; kind of versus sort of versus type of Words: to escape guard jailbreak cover-up cell haunted animated dysfunctional family trouble-maker pacifier merchandise le

发表于:2019-02-23 / 阅读(151) / 评论(0) 分类 美语听力 English Cafe

How Cells Get Around 漫步的细胞 A major reason why many cancers are so dangerous is that they metastasize . This means that instead of staying in one place, the cancer cells migrate from their original site to other parts of the body. No wonder

发表于:2019-02-24 / 阅读(144) / 评论(0) 分类 英语听力文摘 English Digest

Topics: Types of prisons and the parole system; American cities: Austin; using prepositions with the days of the week; for the world to owe (one) something; late/early morning, afternoon, and evening Words: prison to pose a threat solitary confinemen

发表于:2019-03-05 / 阅读(262) / 评论(0) 分类 美语听力 English Cafe
学英语单词
advanta
alkyd starch
alkynyl magnesium halide
anticolibacillary
applied pal(a)eobotany
Balbeggie
become apparent
Brosme
campbell
capital of Tanzania
cessations
Cheyne-stokes asthma
choultry
chrysolophus pictuss
close air support aircraft
closed circuit wind tunnel
comparative assay
cracked stock
cypress family
dachstein
dense charge
derived resistance
dermonecrotic
dibasic potassium phosphate
dispense with royalties
Distributed Network System
dudishly
eight-channel electroencephalograph
electromagnetic power press
electronic effect
epi
erring
exhaustion of local remedies
exochomophyte
expose to
fact sheets
fired process tubular heater
flush snap switch
follow-up study
fore-quote
Francisco Franco
gravity anchor
gravity tape-up
harbor defence
have a slate loose
have sth for the whistling
hemizygous
hypochrome
incomplete randomization
indirect condenser
industrial and mining area
infrared search system
isl.
isolated storage
jacketed crystallizer
Jarrīsh
Kambimbi
L(alpha)-chalcocite
land a punch
lepidium mentanum
lesguft academy
Liederkranz
lightbown
lovozerite
low-levels
Madre de Dios, I.
magnetic electricity
mallota abdominalis
mean age at first marriage
minimal entire function
misascribed
mouline
nanobot
nuclear reaction products
ommatius compactus
opsimaths
panigrahis
plastigel
plevin
progressive sampling
quadruple recorder
rat's
re-emergences
reactor ground neutral system
reissite
requoting
rights reserved
ring peptide
Sainte-Anne-de-la-Perade
schauzkrampf
scrub nurses
socioracially
squillagee
stramonium
stress-strain-temperature space
take a pounding
the interface
three elements design
variable ratio
wenceslaus
Yaapeet
yale bronze