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ThisprojectissupportedbyChineseMedicalBoard(U.S.A)In1990,EisenbergisolatedacDNAfromthehumanmonocytelibrary,expressionofthecDNAinE.coltyieldedtheproteinthatcouldhinderIL--lbindingIL--lreceptor,hetermedtheproteininterleukin--1receptorantagonist(IL--lra)ti.23.IL--lraisauniquecytokinethatcanstronglybindthecellsurfacereceptorsofIL--Iwithoutinducinganydetectableintracellularresponses"'.SinceitisaneffectivecompetitiveinhibitorofIL--lbothinvitroandinvivot'3,IL--lraisausefultooltodetermineth… 相似文献
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Humanpapillomavirus(HPV)caninducemanybenignproliferateddiseases,forexample,lowergenitalwartsandhasacloserelationshipwithcervicalcancer.Morethan70typesofHPVhavebeenclonedandidentifiedc1J.MostofthemwereclonedintoplasmidPBR322.SinceHPVcannotproliferateinanycellcultureinvitroasyetmostHPVDNAsusedinChinacomefromabroad.InordertoconstructourHPVDNAclone,theHPV-16DNAwasisolatedfromthecervicalcancertissueandclonedasfollows.MATERIALSANDMETHODS1SpecimencollectionandtissueDNAextraction… 相似文献
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