Unit19
VaeThatWillProtestEveryTypeofFluA“universal”fluvaethatprotestmanystrainsoftheviruscouldbeavailablewithinafewyears,stistshavesaid。
Earlysafetytrialsofthevaehavealreadystartedanditcouldbetestedosasearlyas2013。
Wwithmice,ferrets(雪貂)aheUSteam“primed”theimmuha“base”ofinfluenzaDNA。Theyaddeda“booster”gularseasonalfluvaewhidbroadesimmunity。Thevae’seffeessimprovedeatil,theoretically,retswouldbeimmuoflu。
The“priming”orbasevaea1999virusbutantiberalizedvirusesofdifferentsub-typesandfromdiffereheresearchersreportinthejournalSce。
Midferretswereabletofightoffvirusesdatingfrombefore1999,ingthedeadlystrainof1934,andalsostrainsfrom2006and2007。ThevaewasalsoeffectiveagainstH5N1“birdflu”。
Dr。GaryudyleaderfromtheUSNationalInstituteyaiousDiseasesihesda,Maryland,said:“Weareexcitedbytheseresults。”
“Theprime-boostapproasaovasforiwouldbesimilartovaagainstsuchdiseasesashepatitis(肝炎),wherewevaateearlyihenboostimmunitythroughoal,additionalinosinadulthood。
“Wemaybeabletobegirialsofabroadlyprotectivefluvathreetofiveyears。”Thestistsmeasuredhowwelltheprime-boostvaidferretsagainstdeadlylevelsoffluvirus。
Threeweeksafterregtheboost,20micewereexposedtohighlevelsof1934fluvirusasurvived。Whenmiceweregivenonlythe“prime”or“boost”elementsalone,orashamvae,alldied。
Similarresultsweresees,redictorsoffluvaeeffeessinhumans。
Fluvirusesarenotoriousfortheirabilitytomutateaanttovaes。
Aalollipop-shapedfluvirussurfacalledhaemagglutinin(HA)。Butthestructureoftheproteiesreadily,allowiogouText
。Thenewvaerates“uibodiesthataimforthe“stick”oftheHAlollipop,whichvarieslittlefromstraintostrain。
ProfessorJohnOxford,Britain’sleadiandavirologistatStBart’sandRoyalLondonhospitals,said:“Thisisaerestingapproadtheyareamuchrespectedgroup。Iwouldtakethisveryseriously。Theyseemtohaveidentifiedauniversaleibodythatattaydifferenttypesofvirus。”
“Thisissomethingthatwehavebeenafterftimebuttheageiscrucial。
Manynewvaesfallatthehumantrialstage。”
PrhPennington,Britain’sleadingmicrobiologist,ofAberdeey,said:“Itisaingandattractiveapproach。Wereallydodesperatelyhingalongtheseliisaheproofwillbeinthepuddiheritworksinhumans。”
Las
1。va。疫苗
&akesavaeagainstinfluenzaeveryfall。
她每年秋季接种流感疫苗。
﹡van。种痘;接种
Ireadsomepublicityaboutvaswhilewaitingmyturor’s。
在医生那儿候诊时,我读了一些关于接种疫苗的宣传。
2。primev。1)使准备好,使完成准备工作2)事先指导,事先向……提供情况1)Theyhaveprimedtheexplosivedevice。
他们已使爆炸装置准备起爆。
2)Thewithetrialhadbeencarefullyprimedbydefenselawyers。
被告律师对出席审讯的证人事先作了仔细的指导。
3。immuneadj。免疫的,有免疫力的Iamimmuhedisease,forIhaditonce。
我对这病有免疫力,因为我已得过一次了。
﹡immunityn。免疫力
Highlevelsofstressmayloweryourimmunitytoonillnesses。
压力过大可能会使你对常见疾病的免疫力下降。
4。sistvi。1)由……组成;包括(常与of连用)2)(存)在于(常与in连用)3)符合,一致;并存(常与with连用)1)Theentireworldatter。
整个世界都是由物质组成的。