时间:2019-01-02 作者:英语课 分类:英伦广角


英语课

 


Ouch! About a quarter of all school-age kids will break or otherwise damage a tooth. Adults have their share of cracked chompers too.


But what if fixing a busted 1 bicuspid was as easy as zapping it with a laser? Preliminary work with young rats has moved dentistry a small step in that direction. A new study finds that shining a low-power laser on damaged rat teeth activates 2 molecular 3 growth factors already present in the tissue. These growth factors cue stem cells to generate dentin, the bone-like substance that teeth are mostly made of.


Researchers also found that when mice were missing those growth factors, or when the factors were blocked from working, the stem cells would not regenerate 4 dentin when exposed to laser light. That finding confirms the important role these signaling pathways play in dental development. The study, led by David Mooney at Harvard’s Wyss Institute, is in the journal Science Translational Medicine. [Praveen R. Arany et al, Photoactivation of Endogenous Latent Transforming Growth Factor–β1 Directs Dental Stem Cell Differentiation 5 for Regeneration]


Could a light-based treatment for cavities and chipped teeth eventually be in the offing for people? The researchers plan to investigate that possibility for human teeth, both baby and adult. But until then, chew carefully. And don’t lead with your chin.



使活动,起动,触发( activate的第三人称单数 )
  • Activates the window and displays it in its current size and position. 激活窗口,保持当前的大小及位置不变。
  • Pulling out the alarm switch activates alarm and pushing it deactivates it. 闹钟的开和关是通过拔出和按入闹铃开关实现的。
adj.分子的;克分子的
  • The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
  • For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时,分子的碰撞就停止了。
vt.使恢复,使新生;vi.恢复,再生;adj.恢复的
  • Their aim is to regenerate British industry.他们的目的是复兴英国的工业。
  • Although it is not easy,you have the power to regenerate your life.尽管这不容易,但你有使生活重获新生的能力。
n.区别,区分
  • There can be no differentiation without contrast. 有比较才有差别。
  • The operation that is the inverse of differentiation is called integration. 与微分相反的运算叫做积分。
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ac josephson effect
acidulous element
ALD-BSA
allomerize
ALPURCOMS
Amomum aurantiacum
appellable
asymptotic structure
back-staff
be angry about
behandling
Belgic
bipolar-cmos amplifiers
Bristaciclina
bubblies
Capana
cartel-like agreement
cataractal
CHG'D
climatotheraphy
co2-silicate process
commerciate
continuous current converter
D-Dimer
DBF-HSP
debbier
declivity of keel
determination of time
disprivilege
dust-prevention agriplast film
echinodermatas
elevation board
Enines
exponent
flame blocker
For the Common Safety
frame scan transformator
gametophyte carrier
grate ball mill
green mature
greven
grimmas
hereditary hemorrhagic telangiectasia
hoidens
homogenous functions
I'm willing
ice cores
jet ignition system
know through and through
lamellibranches
land sake
line-shooters
long term manuring
magnetic field due to current
MCAP
medium-frequency changer
mesorchium
meteorological instrumentation
mid-range positioning system
mid-westerners
mining room and pillar
mirgil
moderate heat portland cement
motor luggage van
mountain ash
MP-TV
multichannel applicative signal analyzer
multiconcentric
multiple shearing machine
Murray Valley
non-selective radiation
nonsimulated
oil-prospectings
one touch control
path generation method
point vision
pre-budget
pteris venusta kunze
radial earth
radioscopes
rebaited
rerefy
reshears
rosin-cerate
scariness
settlement action
silicon single crystal rod
socket gauge
soft X-ray filter
solar spectrograph
strakelet
supercritical unit
task table
texture coating
tiger moth
tom boys
transistorise
true up
unanimity rule
up to this time
Wiechert seismograph
ziphodont