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. 2021 Mar 27;11(4):283. doi: 10.3390/life11040283

Figure 3.

Figure 3

Cell growth determination using direct cell counts at the end of each of the three missions. Cell growth was evaluated in the (A) Micro-6 (FPA), (B) Micro-14/FPA, and (C) Micro-14/FEP payloads. These analyses allowed mission-to-mission comparison using the same hardware (FPA comparison between A,B), as well as comparison using two different types of spaceflight hardware (A/B = FPAs versus C = FEP bags). ‘Low’ refers to the samples seeded with a low inoculum, ‘High’ refers to samples seeded with a high inoculum, ‘Early’ refers to samples activated near the beginning of the spaceflight mission, ‘Late’ refers to samples activated late in the spaceflight mission, and ‘viable’ refers to samples returned alive. Differential growth was not noted in the viable samples since flight cells were subjected to different transport temperatures than the terrestrial controls. Large FEP bags represent those with a final volume of 12 mL; small FEP bags represent those with a final volume of 3 mL. Black bars = flight; green bars = terrestrial controls. * p = 0.02; ** p = 0.01.