时间:2018-12-24 作者:英语课 分类:Scientific American(一)月


英语课

This is Scientific American’s 60-Second Science. I’m Steve Mirsky. Got a minute?


Generations of American children have been told, “Eat your broccoli 2!” And for decades, researchers have known that broccoli and related vegetables like cauliflower and watercress appeared to lower the risk of some cancers and that compounds in the vegetables could kill cancer cells. But how the cruciferous veggies worked their medical magic was a mystery until now, because researchers have figured out just what broccoli does that helps keep cancer in check. The work appears in the Journal of Medicinal Chemistry.


Proteins coded by the gene 1 p53 help keep cancer from starting to grow. But when the p53 gene is mutated, the protection is gone. Mutated p53 is implicated 3 in about half of all human cancers.


Broccoli and its relatives are rich in compounds called isothiocyanates, or ITCs. And these ITCs apparently 4 destroy the products of the mutant p53 gene, but leave the healthy p53 proteins alone and free to suppress tumor 5 development.


The researchers write that “depletion of mutant p53 may reduce drug resistance and lead to new strategies for treating cancer in the clinic.” In the meantime, eat your broccoli!


Thanks for the minute. For Scientific American’s 60-Second Science, I’m Steve Mirsky.



1 gene
n.遗传因子,基因
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
2 broccoli
n.绿菜花,花椰菜
  • She grew all the broccoli plants from seed.这些花椰菜都是她用种子培育出来的。
  • They think broccoli is only green and cauliflower is only white.他们认为西兰花只有绿色的,而菜花都是白色的。
3 implicated
adj.密切关联的;牵涉其中的
  • These groups are very strongly implicated in the violence. 这些组织与这起暴力事件有着极大的关联。 来自《简明英汉词典》
  • Having the stolen goods in his possession implicated him in the robbery. 因藏有赃物使他涉有偷盗的嫌疑。 来自《现代汉英综合大词典》
4 apparently
adv.显然地;表面上,似乎
  • An apparently blind alley leads suddenly into an open space.山穷水尽,豁然开朗。
  • He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
5 tumor
n.(肿)瘤,肿块(英)tumour
  • He was died of a malignant tumor.他死于恶性肿瘤。
  • The surgeons irradiated the tumor.外科医生用X射线照射那个肿瘤。
标签: 托福素材 sss
学英语单词
A-frame loader
absorption spectroelec-trochemistry
agglomeration of industry
Ailly
allamanda catharticas
althusserianism
aluminum oxygen-silicon polymer
anti-hormone
bascionic sensilla
be a slave to
be wanting
beneficial
Bifidobacteriales
blown my own trumpet
Borovan
borrominis
bottom round
braza
bump cutter machine
calhan
callistus i
candlelighted
cellular automaton
cerebriform tongue
chahar kent
chain-reacting
control concurrence
convergent position
crooked joint alignment
dactyoideus
drifter
dynamic feedback matrix
dynamited silk
electrovectocardioscope
film identification
fluouine cell
FNAA
fragrant
genus Thalictrum
getting lost
gitler
HMWPE
horse vault
instantaneous unavailability
kuykendahl
lacuesta
lokas
make the
mileposting
multivaritate sample
Nam Lake
neuromodulate
Nizhneye
nominate ... to
Old Style calendar
outboard screw
overswive
paranthostomella decaspermi
pericentron
phil-
planiceps
pneumopyelogra
postsales
pre-recorded cassette
private house
privilege of note issue
procedure summary
psycholeptics
quaruplane
R meter
rachida
rear strut
recantations
regiones olfactoria tunicae mucosae
rehabilitation scheme
rollermill throughput
salley
schizogenic
schmozzles
semi-simple linear transformation
seslsesvsesnstshs-s
single skew notch
sinusphlebitis
spiral-fin fuel element
splay out
steel bar straight thread rolling machine
stoyll
structure-baseds
submersibles
superbaryon
the drop
theolepsy
thermal over-current relay
Tohoun
two-way reinforced concrete slab
U-turns
Ulu Langat
urbarium
variable-speed winch
varnished sleeve
warble hole
wireless music player