时间:2018-12-02 作者:英语课 分类:Scientific American(十二)月


英语课

 Every fall, you need a new flu shot. That’s because today’s vaccines 2 train your immune system to recognize specific strains of flu, indentified by two proteins on the virus’s coat, / and /. That’s where the H and N come from in H1N1. 


   
  Problem is those proteins are moving target. They mutate quickly. Once they do, your immune system can’t recognize them, and you’ve got something like the 2009 swine flu. A strain the flu shot never primed us to fight.
   
  To make a more universal vaccine 1 that would work year after year, researchers focused on a smaller, more stable protein, called M2. In human’s strains, the protein has hardly changed since 1930s. 
   
  Researchers engineered the M2 vaccine and gave it to mice. Then they exposed the mice to lethal 3 dose of human, swine and bird flu. All the vaccinated 4 mice survived, their unlucky counterparts did not. The research appears in journal Molecular 5 Therapy. 
   
  A good seasonal 6 flu vaccine will still beat the M2 vaccine, but if the M2 give us insurance against a surprise strain, well, it might be worth a shot. 

1 vaccine
n.牛痘苗,疫苗;adj.牛痘的,疫苗的
  • The polio vaccine has saved millions of lives.脊髓灰质炎疫苗挽救了数以百万计的生命。
  • She takes a vaccine against influenza every fall.她每年秋季接种流感疫苗。
2 vaccines
疫苗,痘苗( vaccine的名词复数 )
  • His team are at the forefront of scientific research into vaccines. 他的小组处于疫苗科研的最前沿。
  • The vaccines were kept cool in refrigerators. 疫苗放在冰箱中冷藏。
3 lethal
adj.致死的;毁灭性的
  • A hammer can be a lethal weapon.铁锤可以是致命的武器。
  • She took a lethal amount of poison and died.她服了致命剂量的毒药死了。
4 vaccinated
[医]已接种的,种痘的,接种过疫菌的
  • I was vaccinated against tetanus. 我接种了破伤风疫苗。
  • Were you vaccinated against smallpox as a child? 你小时候打过天花疫苗吗?
5 molecular
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。
6 seasonal
adj.季节的,季节性的
  • The town relies on the seasonal tourist industry for jobs.这个城镇依靠季节性旅游业提供就业机会。
  • The hors d'oeuvre is seasonal vegetables.餐前小吃是应时蔬菜。
学英语单词
accelerate-stop distance (asd)
acoustical absorption factor
adiabatic coating
agency of international development
all estates
arabbing
bedded salt
bias-cut
brush-strokes
bugeys
caesiumantimony
canoed
Chincha Islands
cleave down
Costen's syndrome
Cuprinol
CYP1A
daphnella nobilis
devil-worships
Dhasa
diesel-fuel
dihydrocuminaldehyde
dorsigerous
downlighting
drupe fruit
entombed
exclusive privileges
fabric draft
factory arrangement
fondaziones
foreign short-term claim
foxtail orchid
free destination
gain of light
genospecies (ravin 1963)
genus platyceriums
Greenbaum
guinea grainss
head-disk assembly
huson
Ikelemba
industrial credit
instance dungeon
intimately
irretrievable loass
isophyllia
isotactic polypropylene oxide
Japan Marine Standard
JAPPing
keltics
labbatt
Latino-
lavamund
ludic
mahoganize
main currency
meaningfully
melito-
miscellaneous charges book
Mollā Bodāgh
monetary agreement
more bang for the buck
natural convective boiling
NDRO
no time to
not really?
optic resolving power
Petare
photopolymer plate
pin point gate
plastic-deformation
plea in mitigation of damages
power-over
principal-distance error
pth-c
resting minute ventilation
Rhynchosia volubilis
rhytidenglerula trematis
roxbies
sagenetosome
seafarer's competency
self sustained discharge
semi-submerged catamaran
shaped beam
shellbark hickories
single-line tariff
streght
thermohydrodynamic equation
tiapride
titanium(iv) chloride
toxidermic
unpreparedly
uploaded
Uzerche
vitelline network
Volgo-Ural'skiy Neftyanoy Rayon
Wellington, Mt.
western mugworts
workflow
xylaria juruensis
Zircopax
zone meridian