> The researchers sequenced the DNA of more than 30 species of parasitic and symbiotic bacteria that, when engulfed by eukaryotic cells, avoid being digested an

> The researchers sequenced the DNA of more than 30 species of parasitic and symbiotic bacteria that, when engulfed by eukaryotic cells, avoid being digested and live off the resources of their hosts. The ability to dwell within eukaryotic cells, the scientists realized, seemed strikingly older than expected. It suggests — with some important caveats — that some version of phagocytosis predated mitochondria, setting the stage for the revolution to come. I'm utterly unfit to contribute anything to this discussion, but this is cool.