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NBME 20 Answers

nbme20/Block 3/Question#6 (19.4 difficulty score)
A new drug has the following effects on the ...
Pathway labeled 'H' (Conversion of Leukotriene A4 to Leukotriene B4πŸ”,πŸ“Ί

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submitted by neonem(572),
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teeunLkeior 4B is a tetnpo mohtccceait eleocmul rfo leeteSvci lsso fo siht uowld heva no eetffc no ,leltsapet msta ,lelcs ro tneleiudhmo - esteh rea moer eispvoresn ot snehgca in ,TXA2 tinec/ahcplrnidoaemcom ,cida dna GIP2, .ctisepvyreel

kernicterusthefrog  FA says: "Neutrophils arrive B4 others" +5  
fatboyslim  Important neutrophil chemotactic agents: C5a, IL-8, leukotriene B4 (LTB4), platelet-activating factor, and kallikrein. Source: FA 2020 page 406 +1  

Rule out anything leading to LTC4 because mast cells release LTC4, LTD4, and LTE4 in Asthma to increase bronchial tone.

+6/- hungrybox(1051),