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Retired NBME 20 Answers

nbme20/Block 1/Question#23 (reveal difficulty score)
A 34-year-old man who is HIV positive is ...
CD4+ T lymphocytes 🔍 / 📺 / 🌳 / 📖
tags: Immuno

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 +5  upvote downvote
submitted by ∗sympathetikey(1600)
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DC+4 lcsel vaacttie elBscl- iwhhc romf clefiolsl adn saecu ngetanmrele fo mpylh do.nes erhfrTeo,e ni na IDAS ,atipetn to rlgaeen eht lymhp ,eosdn hte +DC4 oyctndiufsn tmus eb eevro.dsl

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breis  aeY i etg atth, tbu fi teh isaptent 4DC was 3~5, ohw ni teh lrdow ddi the 4CD cntou iesr ohgenu ot tuislteam B llec eptn.f..ilir?rooa I t'nod tge it +10
namira  eTh ylon ntigh i nac hitnk fo is eth:thta dc4 tncou ttha si negiv aws etkna iorpr to ainhvg staetdr eth trlraiiotarnev .hretypa Sc ein eth qietnuos asks botua rv"eimpod "tn,ncfuoi aebym its inreegrrf ot het tyrhepa uallatcy ebngi ciefteevf dan ist mdgnaea to arenseic cd4 tnuoc dan ucfonitn so as ot be abel to oiucrbtten ot pymhl oend rltgnenmeea ude to y.cmo vmuai +13
kamilia20  I ohhtug it snearrft to a hmoO,yMapmlG +1
bgreen27  iTsh reasnw olnnaxetipa impisle ahtt fyucindtsno esnam sytc,raic hi?gtr uBt rae het C4D lscle aalutylc utdiyncalfons in IV?H ro jtsu acces?r I do'tn keil tsih eqsuitno eaeucbs aryellc obth CD4 adn B celsl rae ndoleivv in mlhpy ndeo gteelnramen ADN fi ipmrdoev nonfiuct = aineerdcs b,menru tneh btoh B llsce and 4CD cslle odwul meet htta iarceir.t +1
drdoom  7beer2ng@ doelnit“ep” si hte roem cspeeri etmr eher ug(hholat I oldwu otn be dursreips fi CD4s fo VI+H uindividlsa wree osal wmeoosh iynu)snclotf.da +1
drdoom  e2gnber@7 a,sol ermeberm ahtt a ilengs 4CD can rvdie teh ptoraonelfiri of ~~mnay B llce.s ,oS ,eys lhpmy odne atnrglemene si nedirv yb D4s,C tbu vulrytlai lal of eth ssam is tlattirebuab ot B lecl .iapesonxn (aTht ,si fi oyu despnpi otu na vtdiectaa mylhp deon and tneh wdgheei all teh T leslc dan nath hegeidw lla the B ll,cse ou’yd dnif teh lyphm doen si msyotl “B llec t)”geiwh. +3
bgreen27  os I nthik I ,ddneusrant epynsdonct~tnliuofdie nad seiliecr"ar~etepnno in oun"ctinf btu ioeatirfrnpol si htneeir ehre orn ehter easebcu it's yllrea jsut Belcl utc"oinf"n +1



 +3  upvote downvote
submitted by andremosq(9)
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Qoituens sksa taubo teh seuac of hte emgnealnrte fo mhpyL ondse .. Lmyph ndeo raratexPoc rleasnge ni an erexemt acluelrl nimemu rposenes rtar(alpiacoc pehrlayap)is atngsai vsriu deintcef eclsl a(Fg2P.A0 9 T)6. sellc egruatel el-lc etidmae yimtimun ... 4DC T esllc caflpycseiil si het TICDER eCll mmnuenI .reopsnes 8D C T ellc si t.occtyxio

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lulumomovicky  ITHS IS EHT AERL TNAEIOP.NLAX Thknsa +
realnorthomfs  raHe !aher 0F220A 9p6 +



 -9  upvote downvote
submitted by ∗hayayah(1212)
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oarcuetMyimcb uaivm poeclxm csfnoiitne aer a mmoonc tiunoorpcstip enniftoic ni tptsinea hwit edacndav DIAS CD(4 toucn ).0tl;&5

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realfakedreams  hh@aaayy ouy ewre geinb .aly.z .hms. Heoi m tsetrda atr-rntailoeirv rphaet.y HIV ifsncte C4D l-sTlCe hogruth itheer C5CR ro orme onmlcomy .XC4RC aeBuces of siataoli-rrvenrt astrt kwinor,g HVI sitn leba ot fniect ynoamre 4DC T escll. husT C4D t htplocmeysy lveels asrtt to iesr dna are elba ot ictaev B lc.sle +16
myf1991  Why a'tcn it eb neooyctm? ampgeahorc ate MAC dan ernttcai ihwt C4D +1
weenathon  f19@ym91 I olas crceoytnrli ecohs oysmotn,ce tbu fi yuo loko ta the tnsuieoq euf,lyaclr ti is pclfisyilcea inksag awth lelc si eqdrreiu orf teh plhmy nsdeo to ,nreealg not wihhc ecll si igndhlna eht ioyemuctrmacb uavim icinetofn. icSne 4DC lslce astulimet B lclse ot eeraitlrfop in pylmh neod isl,elolcf wihhc uldow ekma emht g,iebgr DC+4 T llsec is hte .nsearw +4
j44n  apoegshmcra dtno alnereg nsdoe in ctaf yhet aemk htem lsalmr,e igteln boyd msca tea all hte dab B lcsle ni a edon os morpived amc nxf lowdu eeracdse eth noed eszi +
mpel14  To dda to n@a,aimr an nfuticoeis ideseas ocd ibeddcrse ihts epnctco ni na VHI eclretu hweer he asid ttah prior ot eht Tx tiwh rtltrriineaaov ryhatp,e teh pt ahs uhcs lwo C4D coutn thta ehtir inmmue tmssye ntonca rofm a operenss to het ne,tficino dan featr hteir mienum essmyt si vngei a htlgsi obost whti teh sgud,r ireth ueinmm sesmyt can flanlyi s"e"e het tineocfin &-gt; tmuon snepeors -tg&; scuase S/S +



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