viruses

3.Computervirusesaresmallprograms,theyreplicatebyattachingacopyofthemselvestoanotherprogram.

anizationfromtheoutside.Theyenvisionhackersbreakingintotheirinformationvaults.

urredworldwideandcharacterizedbytheiruniquetwinnedparticles,whichencapsidateacircularsingle-strandedDNAgenome.

双病毒是一类世界范围内广泛发的具有孪形态的植物单链DNA病毒,近年已在多种作物上造成毁灭性危害,给作物产造成了严重损失。

6.AbstractPositiveselectionanddifferentialselectivepressureanalyseswerecarriedouttostudyHaemagglutinin(HA)genesofH9N2influenzavirusesfromdifferenthostsinthispaper.

摘要本文研究了不同寄主源H9N2禽流感病毒血凝素基因正选择压力，以及比较了这些病毒所受选择压力的差异。

monlyusedforthispurposeareadenovirus,adeno-associatedvirus(AAV),retrovirus,lentivirusandherpesvirus.

8.EightSpringViraemiaViruses(SVCV)havebeenisolatedfromculturedcarpandkoiinChinabetween2002to2004.

摘要2002~2004年间从国内养殖鲤科鱼类和观赏鱼类中分离出8株鲤春血症病毒(SVCV)。

EightSpringViraemiaViruses(SVCV)havebeenisolatedfromculturedcarpandkoiinChinabetween2002to2004.