Figure 6
From: Cave bacteria-induced amorphous calcium carbonate formation
Bacterial EPS preserves ACC for at least 26 weeks. (a) STEM image of Rhodococcus degradans BaTD-248 incubated for 21 days and observed 26 weeks later. Spherical ACC grains (black arrows) and partly ordered columnar objects (white arrows) occur on the surface of the bacterial cell. (b) SAED pattern taken from the white circle area of (a) shows the characteristic diffuse rings of ACC and faint calcite reflections. The elemental maps show Ca enrichment and N decrease on the surface of the cell in consistent with ACC formation.
