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Primary and secondary BAs in feces with significant difference. (A) Comparison of primary BAs for the three crewmembers. (B) Comparison of secondary BAs for the three crewmembers. (C) Temporal variation of primary BAs at the different sampling time points. (D) Temporal variation of secondary BAs at the different sampling time points. (E) Comparison of primary BAs in the simulator (IS) and out of the simulator (OS). (F) Comparison of secondary BAs IS and OS.
