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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. 12.

Fig. 12

Transmission electron micrograph of B. subtilis cells in the process of sporulation after prolonged exposure (>72 h) to Cu(II) (experiment with 10 mg/L Cu(II) and 5 g/L bacteria). The electron dense region between the outer structure of the spores and the inner membrane of the parent cells reflects Cu accumulation (arrow “l” identifies lysed cell components).