the 100 trillion bacteria

Maybe... I was surprised it was very dark. I came to learn that the biggest portion of stool is bacteria that fed on our meals. Those 100 Trillion which multiply and feast, and are friendly when we eat right and angry and hostile when we don't.They may be all dead by now in my GIT, although I don't really believe that hypothesis, because bacteria form spores in time of adversity, and the spores are super resistant - like outer space survival type of resistance.