Fig. 1From: Microbial activity response to hydrogen injection in thermophilic anaerobic digesters revealed by genome-centric metatranscriptomicsExperimental set up in phase I, before H2 injection (a) and phase II, after H2 injection (b). The abundance shifts of the species (MAGs) and the differential gene expression between the two phases were evaluated. MAG metagenome assembled genome, R1 single-stage reactor, R2 acidogenic reactor of the two-stage, R3 methanogenic reactor of the two-stageBack to article page