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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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DC4+ escll vaittace eslBcl- iwhch rmfo clifleosl adn esuca eemartennlg of yhmpl eds.no rofeehe,Tr ni na ASID ntap,eti ot rnleaeg teh myhlp sed,on eth DC+4 tucnsnyfdoi usmt be veos.lder

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breis  Yae i tge ,hatt but if hte ispantet D4C wsa 5~3, who ni the owrdl idd teh C4D tuocn eirs ohenug ot metastiul B clle r.eir.p?fnootlai. I todn' gte ti +10
namira  heT ynol nitgh i acn nkthi fo si t tte:ahh c4d uotnc atht si ignev wsa tkane rrpoi ot ahngvi eartdts eth aovniitrrtrlea rtya.ehp neSci het oitsnqeu saks tuboa eomdvpri" ctn"ui,fon yebam tsi ngrrfreie ot hte htypare tullcaay ignbe eetvifcef nda sit daengma to ireaensc cd4 ucton and iunotfnc so sa to be ebal to tntceurobi ot lpmhy deno eglmnreneta ude to o.cym umiav +13
kamilia20  I touhgh ti ftrnreas ot a mOahlpoyMm,G +1
bgreen27  Tish eranws lnopnaatiex isemilp htat nsyuncfodti masne isct,cyra i?rhgt uBt ear het CD4 ellcs cltlauay loutiysfnncad in HIV? ro jsut scca?re I t'ndo klei sthi etqnouis eeucsba ellcayr btho 4DC dna B clsel era ndivovel in plmyh neod tragmeeelnn ADN if emiordvp ftniucno = rdesainec e,nmubr tehn hbot B sclle dna DC4 eclsl dwolu teem htta c.riieart +1
drdoom  @7rg2ebne toee”lpi“dn si the erom srecipe rtme ereh lah(ugtho I duowl tno be pisrurdse if 4CDs of +IVH saniidludvi eewr oasl wemoohs yf)olt.nisndauc +1
drdoom  ern7e2bg@ las,o mbmreeer ttah a sgilne DC4 can rdevi hte fpleiortioanr fo a~ym~n B lc.els ,So ,esy yphml eodn gateremnlne si devirn by Cs,D4 tbu aurylitlv lla of teh assm si eatlbuttibar to B lelc xnneoia.ps tT(ah s,i fi oyu ienpdsp uot an dacettiav hymlp oned nda thne weeihdg lla the T llsec nad htan eeigdwh lal teh B ,lslec o’duy indf het lhpmy edno is losmyt B“ lcle wit)h”ge. +3
bgreen27  os I hknti I rta,desndun ydnueilofdinpsnceo~tt dna cirneetilnosree"p~a in nt"nociuf but rtnifirpoealo si eenihtr eher nro treeh aueecbs it's arlyle utjs leclB ctnnfo"ui" +1



 +3  upvote downvote
submitted by andremosq(9)
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ontiQesu sask otaub eht uasec fo eht ennlmgaeret of yhLmp enosd .. mLhyp noed Prxaacoret ransgele in an mxeeetr larlelcu nuimem oneesrsp aprlc(oaicrta api)yrhelpas asigtna ursvi dicetfne celsl gF0a.(PA2 .9) 6T lcesl ltguerea ll-ce imdteae mmyinuti ... 4CD T llces lfilceyaicps is the RTIEDC Clel mumnenI ens.respo D8C T clel is tctocyx.io

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lulumomovicky  IHTS SI THE LRAE NIALXPNOTAE. Tanhsk +
realnorthomfs  arHe h!rae F200A2 6p9 +



 -9  upvote downvote
submitted by hayayah(1212)
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rbaeuMoycmtic umavi opmxlce iceninftos ear a moocmn uoiotippnctrs neciifont in aptesnit tihw dadvcnae AISD 4C(D utnco 0.);t&5l

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realfakedreams  yahhay@a uyo were nibge .la.yz smh.. iom eH dsettra r-rentroalaiivt atyph.re IHV tcenfsi CD4 sTlCel- hutgohr heerit CCR5 ro rmeo nmmocoly .C4RXC eacsBeu of vteatlairs-rnori tsatr in,wgkor HIV nsti aelb to etfcni nyearmo 4DC T slcle. hsuT D4C t ohtlcsyeymp vlesle tatsr to sire nad era blae ot itaevc B esc.ll +16
myf1991  yhW nca't it be ymetocon? ecmrphoaga eat MAC adn tecinart thiw CD4 +1
weenathon  m1199y@f I aslo otecilrcyrn hseco oosty,encm tbu fi oyu lkoo ta hte tiouqnse fyalclre,u ti si saflcpciliey sgnkia ahtw clle si eeiqrrud for hte mhlyp seond ot eg,enrla ton whhci elcl si nlhdangi eht oectrcymuabmi uaivm toinefc.ni Sneic CD4 lslec altsteimu B clsel ot rlirfpetaoe in lmhyp deon soil,elcfl wchih odluw emak htem ,giergb 4D+C T lelsc si hte .aswenr +4
j44n  rmgpsaheaoc dnot rngelea dneso ni ftac tehy akem etmh ,mlserla elgtni doby cmsa tea all eht adb B lscle in a odne os mrvdoipe mca nxf owlud dseceera hte nedo iesz +
mpel14  oT add ot ri,nm@aa an scinuitoef isseade ocd ierddecsb itsh ocpenct ni na HIV ctlueer wereh eh sida ttha rprio ot eht Tx ihtw rinavratotirel tpae,yrh eht tp sha cush owl 4DC ucotn taht ihrte muemni msteys connat ormf a roseneps ot the ftc,nioeni and traef erthi ueinmm metyss is vgein a isglth tosob hwti the grusd, thrie eunmim tessmy acn laylfni ""see teh nicetifon t;g&- nmtuo eonserps &tg-; esscua SS/ +



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