Fig. 7

The concentration change of dissolved a Ca2+ and b Mg2+ in the PEM medium adjusted to pH 8.5. Control represents the medium without pH treatment. NS, ** represent p > 0.05, p < 0.01, respectively. The values represent mean ± S.D. n = 3
The concentration change of dissolved a Ca2+ and b Mg2+ in the PEM medium adjusted to pH 8.5. Control represents the medium without pH treatment. NS, ** represent p > 0.05, p < 0.01, respectively. The values represent mean ± S.D. n = 3