Fig. 2

Locations with a recorded viable presence of K. pneumoniae. The figure describes the locations of the ISS at which K. pneumoniae was detected from the respective PMA-treated samples, and also features its coexisting microorganisms that inhabit the location at >1% relative abundance. The networks have been drawn on Cytoscape for all three time points of the study by Singh et al. 2018: Flight 1 (F1), Flight 2 (F2) and Flight 3 (F3). The octagonal location nodes have been color coded according to the ISS Node they belong to. Locations #1, #2 and #3 belong to Node 3; locations #4 and #5 to Node 1; location #6 (not shown here) to PMM and location #7 to the US Laboratory. The microbial nodes have been color-coded such that those existing at more than one location with K. pneumoniae are shown in grey, implying that a microorganism found in a large number of locations (such as K. pneumoniae in F3) will be filled with a darker shade of grey