LJWorld.com weblogs Dangerous Ideas
Walking Petri Dishes?
Biology is messy. We can't put organisms into neat little boxes and as it turns out, while we think of ourselves as being individual organisms, the truth is a bit more complex. According to an online article from Scientific American, "Humans Carry More Bacterial Cells than Human Ones" , we are probably best thought of as walking petri dishes because of the number and diversity of bacteria that live inside of us. According to the article, scientists used to think that these bacteria were commensals, that is organisms living in or on a member of a different species with out harming or providing much benefit to the "host". But new research reveals that these bacteria interact with us in complex ways and and often significantly benefit us. For instance many of these bacteria appear to help us process our food and help regulate certain aspects of our immune system. So there is a real sense that you and I are really communities of organisms. Now I wonder if the dreaded toe fungus some of us have also benefits us in some way.