1x96-well filter plate, x-Plex assay format that includes premixed coupled beads, detection antibodies, and lysates for detecting phosphorylated NF-kappaB p65 (Ser536), p38 MAPK (Thr180/Tyr182), p70 S6 kinase (Thr421/Ser424), requires phosphoprotein reagent and cell lysis kit offered separately