QCM Chemotaxis Cell Migration Assays are built on the platform of a multiwell plate that includes a 24- or 96-well migration chamber and a feeder tray. Each chamber contains a microporous polycarbonate membrane of a specified pore size. Both sides of the membrane are uncoated. Cells of interest are pipetted onto the top of the insert. Migratory cells move through the pores of the membrane and cling to the bottom of the polycarbonate membrane, in response to a chemoattractant loaded into the bottom feeder tray.