I've done a small amount of research and found out that the human body has separate microbiota in the stomach, small intestine and lungs as well as the colon. My question is why focus on the colon microbiota, wouldn't it be better to transplant microbes from every part of the body that they are found in? Is it possible to safely transplant microbes from those parts? and how would that work? I'm also wondering if anyone has figured out an effective way to clear the microbiome prior to FMT?