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. 2017 Aug 29;7:9611. doi: 10.1038/s41598-017-10082-x

Figure 5.

Figure 5

Effects of HEDTA and temperature on the nucleation and growth of fluorapatite (a) shown in the XRD patterns of precipitates from the HEDTA solution (blue line) and the non-HEDTA group (yellow line). (b) TEM of the precipitate from the HEDTA solution, which showed PNCs of approximately 5 nm aggregating around ACP. (c,d) Time course of the amount of free calcium ions measured by a calcium ion-selective electrode (Ca-ISE) in different phosphate solutions at different temperatures.