Figure 3: PCA scores plot of ion flux behavior when various concentrations of Glu were applied. (a) Low concentration samples (0 mM (As)), middle concentration samples(0.2 mM (Bs), 0.5 mM (Cs), 1 mM (Ds)), and high concentration samples (1.5 mM (Es), 2 mM (Fs)) (b) Only low concentration samples and middle concentration samples.