Everyone's loving the awesome viral video by a rowdy group of Harvard med students who ask "What Does The Spleen Do?"  Well, at Guts HQ, we've put together this handy cheat sheet to answer the Big Question.  By the way, Spleen is really excited to get all this attention, although she has to resist her natural urge to fight something viral.  Download a hi-res printable PDF here. WhatDoesTheSpleenDoMR