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Compound A and compound B both bind to a receptor. If you mix 20 um compound A (Kd, A = 5 uM), 6 UM compound B (Kd, app = 3 uM), and 5 uM receptor, will the receptor be mostly bound to A, mostly bound to B, or mostly free? = O Mostly bound to A Mostly bound to B O Mostly free receptor Not enough information