Figure 7From: Expression of P2 receptors in human B cells and Epstein-Barr virus-transformed lymphoblastoid cell linesEffect of extracellular Ca2+-free conditions on [Ca2+] i induced by ATP. (A) Average time courses for Ca2+ responses induced by external perfusion of ATP (1 mM) in normal solution and the Ca2+-free solution in B cells (n = 4). Agent was applied as indicated by the horizontal bars above the traces. (B) Peak of ATP-induced [Ca2+]i rises during pretreatment with the Ca2+-free solution (n = 14 for B cells; n = 12 for LCLs). Data are the mean ± SEM; *p < 0.0001 compared to Ca2+ treated samples.Back to article page