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. 2016 Aug 5;7:1240. doi: 10.3389/fmicb.2016.01240

FIGURE 6.

FIGURE 6

H2 production by Thermococcus paralvinellae and CH4 production by M. bathoardescens and Methanothermococcus sp. BW11 grown alone and in co-culture. (A) Cell-specific H2 production rate of T. paralvinellae at 82°C and 60°C when grown on 0.5% maltose and 0.01% yeast extract (light gray), 0.5% tryptone and 0.01% yeast extract (gray), and 0.05% each of maltose and tryptone and 0.01% yeast extract (black). (B) H2 (circles) and CH4 (triangles) produced when T. paralvinellae was grown alone (open circles) and in co-culture (filled symbols) with M. bathoardescens at 82°C (red) and with Methanothermococcus sp. BW11 at 60°C (black).