(a)
(b)
Figure 7: Calycosin and formononetin-induced Ca2+ response in HUVEC. (a, b) HUVEC was loaded with Fluo-4 in Tyrode solution containing 2 mM Ca2+. Representative graph and relative fluorescence intensity in intracellular Ca2+ concentration (), evoked by calycosin (100 μM) and formononetin (100 μM) over the time course (). Data were shown as mean ± SEM. versus control.