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From page 34...
... However, the SR-SAG2's analysis does not attempt to calculate or weigh the probability of any contaminating microbes from a spacecraft cleanroom on Earth actually surviving and growing in each of the newly assigned Mars Special Regions. Propagation of contaminant life from Earth on Mars on a large scale, in addition to water and temperature, will need redox gradients of abundant electron donors and acceptors for chemolithotrophic bacteria or metabolites that other microbes might use.
From page 35...
... The committee is of the opinion that bioburden assays have to be modified to give more relevant information about non-spore forming microbes with the physiological potential to survive and even replicate on Mars taking the new molecular based methods into consideration. Suggestions for future research directions can be found in Appendix A
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