Inhibition of MSTO (left panel) and NCI (right panel) by piroxicam and/or CDDP. MSTO and NCI were treated for the indicated time periods as previously specified. Cell growth was assessed by cell counts and was expressed as percent of control (untreated cells). Experiments were repeated in triplicate and media values were calculated and indicated in the upper table. P values at the different points of the treatments respect to the control and of the combined treatment (P+C) respect to the single drugs treatment were indicated in the lower tables. CTRL = control; P = piroxicam; C = CDDP.