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. 2015 Feb 5;3(1):17–33. doi: 10.3390/microorganisms3010017

Figure 1.

Figure 1

Epifluorescence micrographs of L/D stained samples, where green reflects metabolic activity and red reflects inactivity. (A) Untreated fracture water (B) CH4 induced (C) CH4 + SO42− induced.