Effect of GSPE on 50 mM K+-induced [Ca2+]
response. Reproducible [Ca2+]i increase was induced by treatment for 1 min with 50 mM K+ HEPES-HBSS at 30-min intervals (control, n = 22). Pretreatment with GSPE (6 μg/ml) for 5 min did not affect the high K+-induced [Ca2+]i response (GSPE, n = 27). Data are expressed as the mean ± SEM.