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NBME 22 Answers

nbme22/Block 4/Question#50 (44.0 difficulty score)
A 31-year-old woman in the second trimester ...
Hematopoietic stem cellsπŸ”

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submitted by keyseph(43),
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suJt ym tow :tcsen ,yaolbCptttosroh amripry stem lvul,is ootyhotalcpsstyb,irn and clabotshiotpr eaulacn era lal sotopemnnc of teh pndlevgieo tplaecna, which lpspeius eht uestf ni eou.rt heesT esrurstcut aer lla eeridvd ofmr hte ltostapbrh,o hwich si ecindrsoed eaeoxcbynritmr- usitse. ooapii"teecHtm semt lcels" si hte olyn ansrew eccoih htat dowlu edciaint ealtf asrpt erew r.efomd


submitted by seagull(1567),
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shTi si an ocenmieplt aytodihifdmr m.oel Tyhe tcoanni mptoecleni afelt ratps ucnlgdiin setm lelsc hihcw rae rstmyio adn gevi reis ot eunrtucsudtr sstue.i

kard  Can someone explain why the other choices are incorrect?, Thanks +  
mtkilimanjaro  I got it wrong and put the lacunae one, I wasnt sure if hematopoietic stem cells could occur from the mother as well. If it had any other cell line i wouldve picked it. For the others: this lady has a partial mole, which has fetal parts. A complete mole has NO fetal parts. Both mole types have cyto, syncytio, and villi. Thats how I ruled those ones out +2  

submitted by nwinkelmann(293),
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I wkno htta cmlotpee mosel do ont oanticn aetfl etsusi (..ei nloy oiiohrcnc ilu,vsl ath,yotosobcpltr nad sytspcitohonyl)osrcba dan ailtarp lmeo as falte ui,etss icrhocoin il,lusv ptoco,tlyasohtrb dna onpcltiscbhryys.oota vyoOlsbiu emhpoieoctait etms lscel era ltfea rpsta sa thye trun onit bdool lelsc, btu whta si the eollarv iifdontnei of telaf arst?p