Fig. 5From: Microbial activity response to hydrogen injection in thermophilic anaerobic digesters revealed by genome-centric metatranscriptomicsMain upregulated genes after H2 injection by the selected MAGs (indicated with colored dots and squares) in R1 (single-stage reactor) and R3 (methanogenic reactor of the two-stage configuration). rTCA reductive tricarboxylic acid cycle, ETF electron transfer flavoproteinBack to article page