In this group of experiments, we are aiming to test the affinity of our receptors, LilrB2 and PirB to beta-amyloid oligomers. To do that, we will have HEK293 cells express LilrB2 and PirB fused with YFP. We will then apply biotinylated beta-amyloid oligomers to the LilrB2 and PirB expressing cells. To test for binding, we are going to use the biotin-binding protein streptavidin covalently bonded to a fluorophore.