need help with your account or subscription? click here to email us (or see the contact page)
join telegramNEW! discord
jump to exam page:
search for anything ⋅ score predictor (“predict me!”)

Retired NBME 23 Answers

nbme23/Block 1/Question#22 (reveal difficulty score)
An investigator is studying the adverse ...
Presentation of antigens to CD8+ T lymphocytes 🔍 / 📺 / 🌳 / 📖
tags: immuno repeat

 Login (or register) to see more


 +11  upvote downvote
submitted by sajaqua1(607)
The site was recently locked🔒
It can be re-accessed by making a purchase.

Purchase your membership here
unscramble the site ⋅ become a member$279$49

CMH I tnucinof is atnriegl ot caecnr np.spousersi MHC I isaldpys nyeneulgoods edsyznsihet orpnseit nad ntpreses hmet to 8DC+ T .lcles ehT lrfueai ot ylsadip HMC ,I ro MHC I ipslayd fo flneno-s nad( yb neixsento ruceocsan) tseiporn tgriegsr a erclulal menumi rpesens,o eladnig ot ncttsudeior of het c.lel

The motaepseor is dues for hte raaotndeigd of wron ,tou ,ecstesenn ro oredaflmm orntesip. As cnrcea ,pesvlode meor naustoimt lade to sredeaicn rnogw peo.tnris Oynl by oeenspsrix fo het mpe,seoaort or tis roesve,npx-oisre nca eesht tanutm eopstnir be rddadege tsfa enoguh ot ton eb dlasdiepy by MHC I nda adel ot the lecl bngie lked.li zeooBrbtim csolkb het raestpe,moo os hte tatunm spoenrti are saydpidel no hte sr,eaufc wailnogl het muiemn etmssy to egizenorc dna lkli ohopctlgliaa ecl.ls

unscramble the site ⋅ become a member$279$49
catch-22  Aehnort way to phprocaa it is ot htkin uobat MHC clssa I epicrnoss.g asyBal,cli fi oyu ihbinti hte osemae,ortp deeitpps lilw ton eb rneetadeg adn oinghnt si avaeliabl ot eb ldadoe oton CMH I me(erbemr HCM I hsa ot eb alddoe erbfeo ti's sdtptoanrre ot teh lelc )refuc.sa llesC thta 'ntdo sserepx CMH I get leidlk yb the antuarl s k.eilrlw//w72sppw/vn32mCnchog.tsP/tl4nMcai:i/.c.h61ibm/ler.t +32
kai  I"n con,ocsnuli we vaeh dertdentosma htta het rsoepmatoe iniobtihr rtmboiezbo lanwtugs-doree csasl I dna nanshcee eht sisvittnyie fo maolyem to KN eeet–midcladl sil"ys rofm eht nsilcocnou fo eth HIN eprap +6
maddy1994  hnoerat sihmmenca si by igkcnbol oeospmerto u neev esderace eirtndago of opcortpitaop oip.r.t.sosen ti nhaeecsnc ofts(poasrmiop od)rwul +6
azibird  uBt 8+DC nda KN cslle lilk aiv ierp!ronf Why si shit aswner owr?gn Is it sucebae is't nto eth rypimar eftc?ef +2
testready  heT" otsreapmeo is het mrjao ruoecs fo ilptctyooer aiyvtcit onvdlvei in hte noeteigrna of sietdpep rfo eeanttoipnsr yb ajorm sclthytiiomtiioapb pxcoeml scsal I .slelmuceo We rtpreo the enw neoibrovats htat obtrmbieoz twuldaeno-gers HLA aslsc I no MM sellc, nseigultr in necirsaed KN eiclml–edtade i.s"y sl7c2tpr.w.w/i./i3/wpP4hsblcm2gCnMv.n:6enclamti1/s//tho +
fatboyslim  I intkh htaw OP dias octatcsdinr thiw athw 2h2ct-@ac cetdi ni het uePbMd etcrlia. +
an1  PO dasi "Olyn by ireoenxpss of teh oteaems,opr ro sit roix,eneossv-epr anc eshet mnutat ortspnie eb ddeerdga tsfa oungeh ot ton be dpailydes by CMH I". WU QDI 14167 sasy ttha a itpoenr eenuosdrg eirddotnaag yb the iuqniutib oeseoratmp ahwapy,t freta hicwh ti eogs to eth ER dna nthe is enedpetrs to eth llce esrcafu for CHM 1 spsreeno idgelan ot ippatsoso via prfmreso and sznagyerm. Hvaing a oeotaperms nrhibitoi oludw atayllcu entepvr teh HCM ropessne ecbsuae on otpesnir are liaeps.dyd solA tneo ttah eth equtiosn syas ichwh cpessor iwll be acteefdf, heter is no noimetn of ceinesra ro ceerad.es So ys,e eth CHM /1 D8C haystawp si ftafec,ed tub ti's tcyluala dwon leeuda.grt An senaecb fo HMC 1 adels to KN cell eaetmdid d.ehat +

"Studies have shown that proteasome inhibitors block the assembly of MHC class I molecules and this is almost certainly because they are stopping the production of presented peptides that are needed for this process (6)." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3094101/



 +5  upvote downvote
submitted by tinydoc(276)
The site was recently locked🔒
It can be re-accessed by making a purchase.

Purchase your membership here
unscramble the site ⋅ become a member$279$49

ItozRtp/U.:ymh//sHJtuu53fheb

MOA of ptmroesoeo ohniirsibt fro M.M LR:DT si atht ythe ibylaalsc lokbc eth mtsoeroepo fmro itgfinuncon os thta oemmyal sclel 'tnca ececrly rotsinpe (teyh kmea a nto of ehmt) adn nwhe hyet ncat' eb yclederc thye biuld pu dna astth ctoix ot eth ecll nda ti ide.s

dyboen atht hte senouitq si siaclably anksig if teh inibiothin of oesotrospme inst ipciesfc to hte ylmaMeo selcl nad it itihiebnd torhe lsce'l mstoooepesr whta wudlo be ectee?dff

CMH ssacl I is epnetsr no all ladunecet lcsle all( llecs ni eht ydbo xctepe B)CR and notucifn ot etnespr osoengeund nnsetiag ot C8+D t lcels to eb orydestde for( elxepam rialV ADN ni na etcnifed )ll.ce hTe ywa yeth od ihts si yb inatkg eth eontrpi it esend ot trenspe nad agrbenki ti odnw tino humc slaerlm edtpepi ihasnc os( it cna tfi no het H.CMI fI isth sept swa ditheinib ni hreto clsle etnh eht hte sroetPitnean of CMH I dnowtlu be lbae ot reepnts teirh sneatnig ot C8D+ T elcsl nda rautalN ekllri es.lcl as hte oqiusten ipmseli.

eTh ntoiuqse asw rpseu itkcyr aecbeus if yuo 'tdno wonk woh sepormtooe initrisboh orwk etnh uoy tatsr onoklgi for na anersw taht ulodw naeilxp hwo eyth lwodu ilkl rmotu clsel sa wle.l I otg ti ogrwn .oot It eureqrid lenkodwge of eth wya MHC I sespernt sepe.itdp

unscramble the site ⋅ become a member$279$49



 +4  upvote downvote
submitted by krewfoo99(115)
The site was recently locked🔒
It can be re-accessed by making a purchase.

Purchase your membership here
unscramble the site ⋅ become a member$279$49

Wyh uldwo eonfpsirr be the orgwn raw?nse dWnutol ointcaluaumc of icxto itsoenpr cuase the elcl to rugeodn sptpsiooa ?

unscramble the site ⋅ become a member$279$49
ergogenic22  zierobBtom does nto crltyide iavctate pernr.foi tI iyrdctle ibthisin the ereoapsotm wihhc → abelsen C8+D T lslce to iaeittni sspioaotp → iav rfnoriep rleeaes n(i sencees a wrsmatedon ce)ftef. +4
drzed  Excytla, ti itrsgerg eht lcsel ot nueogrd sptaoispo ihwhc msean ahtt it nca ithere be ecll dmateedi (prineorf nda mrgaezny iva SSFF)AL/A RO ti dlcuo also be htgouhr het ritnicnis ptawayh .g(e. hlrado;itomnic occrthemoy c) +
powerhouseofthecell  uQ:inoste But woh od 8DC eslcl eavh a orle ni shti cpsreso eyxtcla in the ttne?give sI ti ingysa tath enhw the neitspro ibldu p,u lnyo etnh od DC8 slecl meoc nad iaetnsd of MCH I petgsrnnei to ermsspeaoot, yeht tepsrne ti to 8DC to iiittane otippsaso? +
flexatronn  hepeuefol@losohcwrte os it lla gsoe bcak to sbaic muiomn i( gto hist gonrw dan tup toapsoips as ew)ll tbu tfear ewevigrin rnevltea kina d,csar i wno egt St.io oepastrmeso rbake nowd ggadet pntrosei iitwnh the ellc e)gonons.u(de hTe nedkwrabo turodpcs egt enkat pu yb rotprsnat stideaoacs hiwt naniget ncrspeosgi (A)TP nad botgurh to eht hrguo R.E hTe wdanborke dsouctrp aer nhet daoeld noot HCM I oseclmuel nad houtrgb to the scufrea of eth elcl. enWh thigknni uaotb HMC ,I hiktn atbuo D8C+ T sllec FA( HCM 1 x 8 = wDC8.No ot airemmzus, enhw gunsi a earstepmoo b,triioihn 'rueoy ginblkoc hatt gaingtg nda CHM I laognid pse.scor sA stetda ,orbeef 8CD rcesneizog MHC I h(ciwh t'wno appenh nweh niusg sethe rd)sgu +3
whosdaprincesss  entro@naflx athnk ouy !!!! +



 +0  upvote downvote
submitted by abhishek021196(119)
The site was recently locked🔒
It can be re-accessed by making a purchase.

Purchase your membership here
unscramble the site ⋅ become a member$279$49

bormzB,eoit imocfilbazr

msMhcenia = esaeomrotP nhtrs,ioiib dciune rsetar ta MG-2 esahp dna asotois.pp

sUe = tMeilupl emyom,la tmenal clel hapolmy.m

dvA efcftsE = Prapiherel por,hntyaeu epeshr steroz atrenoitvica

unscramble the site ⋅ become a member$279$49
tyrionwill  rnued er,imzobtoB eht stopemoear taconn teisdg vilar gA nad sstrpene it to het mnearbndd-eomeb M-IC.H eefehrTro D-Cc8T ntncao ezrigceon eth htos slelc ocntaignni esredlap ZV.V athT is pbalrbyo ywh ilsenshg is neo fo teh upalrpo isde teceff fo meozir.btoB +
kcyanide101  eTh rgdu hibiitns eptsoeomor. ceHen rehet is no tmnergaf iaaabevll ohutrgh PTA dienis 4DC clle ot oald nout MHC ..I.. sA scuh eth CD8 otipstnenaer to Tlcel is tprvee.ned Teh aamiugclcutn iropesnt sniedi eht 8CD lcsle hicwh aer tno nibge nberok nwdo yb the etoreoopms auces it ot uerngdo aptopisso +



Must-See Comments from nbme23

ferrero on Precapillary resistance
yotsubato on 99%
sne on Triglyceride
sajaqua1 on Area labeled ‘D’ (Spinothalamic tract, right)
stinkysulfaeggs on Hypoglycemia
hayayah on Iris
soph on Peak inspiratory pressure (alveolar): ...
seagull on Area labeled ‘C’ (Cranial nerve 8: ...
water on Dietary change
wired-in on 28.8
beeip on Binding of permeable ligand to nuclear ...
thomasalterman on Hypoglycemia
yotsubato on Inhibition of the cytochrome P450-dependent ...
seagull on Decreased sodium bicarbonate reabsorption in ...

search for anything NEW!