Fig. 9From: Application of a novel biological-nanoparticle pretreatment to Oscillatoria acuminata biomass and coculture dark fermentation for improving hydrogen productionNeighbor-joining (NJ) phylogenetic tree for E. cloacae (A) and K. pneumoniae (B) based on 16S nucleotide sequences. Bootstrap values greater than 70 are shown. The identified species in this study were marked in boldBack to article page