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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Geochim Cosmochim Acta. 2011 Feb 1;75(3):784–799. doi: 10.1016/j.gca.2010.11.011

Fig. 13.

Fig. 13

Transmission electron micrographs of (a) washed E. coli cells grown in basal media and (b) E. coli grown in basal media amended with Cu-citrate. The image shows distinct electron-dense regions of Cu accumulation within the cells (arrow “m”).