1x96-well filter plate, x-Plex assay format that includes premixed coupled beads, detection antibodies, and lysates for detecting total Akt, ATF-2, c-Jun, CREB, ERK2, HSP27, IkappaB-α, MEK1, p38 MAPK, p53, p90RSK, requires phosphoprotein reagent and cell lysis kit offered separately