Fig. 4

Sensitivity of gut anaerobes to air exposure. Most of isolates from the order Clostridiales, phylum Firmicutes (n = 69) died during 1–8 long hour exposure to the air. On the other hand, majority of the tested representatives of Bacteroidetes (n = 29) and Actinobacteria (n = 15) survived 24-h-long exposure to air. For full information on survival of individual isolates see Additional file 3 online