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
2-furylpropiolic acid
adenoma simplex
adjustment table
anharmonic oscillation
annular staphyloma
Anse Boileau
Apollo-Soyuz test project
assembly for failed element localization
badigeon
basilicatas
benzanthacene
bromthymol blues
calc-spar
carry away heat
categorization cue
changing waste into valuable
chap
commandarie
commodity balance sheet
Crovaril
desequestration
dilatation effect
diploheteroecious
economised
engadin (engadine)
engaging stud
engineer's method
enoughly
enumeration type declaration
equity stake
fastidious
floor leaders
fluorescent yield
glykresin
hasty profiles
haydays
heat availability
herring oil
HO variation
hull resistance
hyperphenylalaninemias
Impatiens gongshanensis
in-core housing
iodine catgut
kirsch
kobrins
lake and river mud
legal title to property
leptorrhinian
low oxygen
main drive gear
marker planning
maximum pressure
method of field emission microscope
MIMunE
misdemeaned
moderate fog
money measurement
mortalises
motor input
multiple regeneration
Müllrose
nearly ready
non available
nonobservable variable
one's pygmy effort
orkney is. (orkneys)
overrelaxation parameter
ovoflavin
percier
petrosal fossae
primaverin
profile machine
q.g.
Queen Maud G.
rack type shaving
redissolves
reset-read operation
resyklin
rivingtons
rummy-nose tetra
scare buying
scrubs
Shoahs
silvery
slug slot
split pick
sprung rhythms
stylocoeniella guentheri
substantive cases
sulfurized cutting oil
sweetmixes
the incredibles
thraldoms
touching on
treasury remittance advice
two-day
uniform coverage ability
Vansant
variable-band-width filter
vertical cooler
weap one's heart out