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at least by any significant rate. However, the months that followed, the deuterium in the samples allowed the researchers to track how much water microbes consumed to build fatty membranes around the cell. And this showed that the ancient organisms tended to produce fatty acids called glycolipids, which researchers think may involve all of the bio-preservation. This is the same glycolipids that you see in bio-merculations, or at least fossilized fertilizers on it. So, six months in the experiment, the microbes, they were attributed at 39 degrees Fahrenheit and 54 degrees Fahrenheit. Then there's on big changes. They had big changes in community structure and activity levels. The samples tend to be less diverse than active layers of permafrost, so at least they were changing. But the microbes were as active as their more moderate counterparts. And as I mentioned before, they were produced in these biofilms, which you can actually see. This is one of the things scientists will look for when they go to see the fact that some of the things scientists are looking for on Mars right now, these bio-permeclinations, and these likely tiny biofilms. And that will give them an idea of what could be on Mars, whether there's a microbial life there or if there was at some point in time.