(A) Representative confocal image showed that Jujuboside B induced a rapid intracellular Ca2+ elevation in HAECs instantaneously. (B) Fluorescence intensity curves showed that Jujuboside B increased intracellular Ca2+ concentration in a dose-dependent manner, n = 4. (C) Analysis of intracellular Ca2+ concentration showed that Jujuboside B increased intracellular Ca2+ concentration in a dose-dependent manner, n = 4. (D) Representative confocal image showed that EGTA inhibited Jujuboside B-induced intracellular Ca2+ increase. (E) Fluorescence intensity curves showed that EGTA significantly inhibited Jujuboside B-induced intracellular Ca2+ increase, n = 4. (F) Analysis of intracellular Ca2+ concentration showed that EGTA significantly inhibited Jujuboside B-induced intracellular Ca2+ increase, ** P < 0.01, n = 4. (G) Representative confocal image showed that SKF96365 inhibited Jujuboside B-induced intracellular Ca2+ increase. (H) Fluorescence intensity curves showed that SKF96365 significantly inhibited Jujuboside B-induced intracellular Ca2+ increase, n = 4. (I) Analysis of intracellular Ca2+ concentration showed that SKF96365 significantly inhibited Jujuboside B-induced intracellular Ca2+ increase, ** P < 0.01, n = 4.