> It seems very unlikely that they will interact with human physiology in a meaningful way. Human physiology depends very much on various bacteria. Supposedly,

> It seems very unlikely that they will interact with human physiology in a meaningful way. Human physiology depends very much on various bacteria. Supposedly, there are 10 times as many bacterial cells than human cells in our bodies. Perhaps you should reconsider your attitude if you take into account that bacteria from Mars might wreak havoc on these bacteria?