Figure 16. S. aureus ATCC 25923 ( a ) and E. coli ATCC 25922 ( b ) cell growth in LB at 30 °C for 12 h in Figure 16. S. aureus ATCC 25923 ( a ) and E. coli ATCC 25922 ( b ) cell growth in LB at 30 ◦ C for 12 h in the the presence of zin-doped hydroxyapatite (ZnHAp) with x Zn = 0, x Zn = 0.07 or x Zn = 0.2 at concentrations presence of zin-doped hydroxyapatite (ZnHAp) with x Zn = 0, x Zn = 0.07 or x Zn = 0.2 at concentrations between 1.95 and 1000 µg/mL. between 1.95 and 1000 µ