时间:2019-01-13 作者:英语课 分类:VOA标准英语2011年(十一月)


英语课

Spray Detects Hard-to-Find Tumors


 


Surgeons may soon have a new tool to help locate early-stage cancerous growths; a spray that turns fluorescent 1 green when it comes into contact with tumors.



The spray is clear, but contains a non-toxic dye that almost immediately glows bright green when it reacts with enzymes 2 produced by cancerous tumors.



The fluorescent spray was developed by Hisataka Kobayashi, a researcher at the U.S. National Cancer Institute near Washington D.C.



The problem with many cancers, according to Kobayashi, is that their early-stage tumors are too small to be seen with the naked eye.



“The tiny, tiny cancer is very hard to see and then very hard to handle," says Kobayashi, "and very hard to see whether it’s removed from the body or not.”



Current attempts to image tumors - if they are even detectable 3 - can take hours to days.









A fluorescent spray, now in development, detects early-stage cancer in mice.




Kobayashi and colleagues conducted experiments with mice in which human ovarian tumors had been induced. Within a minute of spraying the cancerous tissue inside the animals’ open abdominal 4 cavities, researchers easily spotted 5 the small tumors, which glowed bright green.



Kobayashi says the spray can help surgeons detect even the tiniest tumors which normally would be missed, increasing the chances for successful cancer surgery and making a recurrence 6 of the cancer less likely.



Kobayashi says he expects the spray to be approved for human use by U.S. regulators within two to three years. His study describing the fluorescent cancer spray is published in the journal Science Translational Medicine.



adj.荧光的,发出荧光的
  • They observed the deflections of the particles by allowing them to fall on a fluorescent screen.他们让粒子落在荧光屏上以观察他们的偏移。
  • This fluorescent lighting certainly gives the food a peculiar color.这萤光灯当然增添了食物特别的色彩。
n. 酶,酵素
  • It was said that washing powders containing enzymes remove stains more efficiently. 据说加酶洗衣粉除污更有效。
  • Among the enzymes which are particularly effective are pepsin, papain. 在酶当中特别有效的是胃朊酶、木瓜酶。
adj.可发觉的;可查明的
  • The noise is barely detectable by the human ear.人的耳朵几乎是察觉不到这种噪音的。
  • The inflection point at this PH is barely detectable.在此PH值下,拐点不易发现。
adj.腹(部)的,下腹的;n.腹肌
  • The abdominal aorta is normally smaller than the thoracic aorta.腹主动脉一般比胸主动脉小。
  • Abdominal tissues sometimes adhere after an operation.手术之后腹部有时会出现粘连。
adj.有斑点的,斑纹的,弄污了的
  • The milkman selected the spotted cows,from among a herd of two hundred.牛奶商从一群200头牛中选出有斑点的牛。
  • Sam's shop stocks short spotted socks.山姆的商店屯积了有斑点的短袜。
n.复发,反复,重现
  • More care in the future will prevent recurrence of the mistake.将来的小心可防止错误的重现。
  • He was aware of the possibility of a recurrence of his illness.他知道他的病有可能复发。
学英语单词
.snd files
a. ilica communis
Acer sino-oblongum
adaptable stage
aminium ion
antierythropoietin
bito
blondness
blood flowmeter
bustes
byte memory address
Callesen
Camellia flavida
Cardiogafin
Carniolan honeybee
chronic threshold dose
Codington County
compensating valve
conidioaleuria
context sensitivity grammar
creative decision
dacryocanalicular
deposit coal
destination node address
deterrent example
dictyostelids
Doxtriferron
draws upon
entire human being
equal appearing intervals
equilibratings
Eremurus inderiensis
ethylene rectification tower
exemplarism
Fasciculotomy
final work
financial statement
folk devils
full sensitivity contrast
glomma (glaama)
gravure cylinder etching machine
heptylene diacid
Hermit of St.Augustine
hermodactyl
high altitude biology
higher order element
How goes the enemy?
Huong Vy
hydrated magnesium silicate
hydrotylosin
IDFT
imprintable
infourme
intangles
international macroeconomics
Itanhém
jaw-bones
job capacity
Kotalahti
lachnum pteridophyllum
leading truck box cellar lid pin
low clearance
lower wing
Macgeea
meningomyelocele
metal mesh
moving-bed
nanoforce sensor
neckera neckeroides
neutron slowing-down theory
nonimmune anemia
not give tuppence for sth
open cell expanded rubber
orifical
paraldehydes
Parkinson's syndrome
prunus serotinas
quackgrasses
relubricating
Rhabdonema
scale papilla
scandalize
selfclosing
set something to music
shank clearing
Smögen
special proxy
sphincter muscles
streetlife
thriftyness
TMJR
travelocity
triatomic excimer
Twitterstorm
ungrazed area
unideal
visible ore
VoiceLink
well-engineered
Wolff rearrangement of diazoketones
work ship
wtop