Needs for illuminating the microbiology of the lumen.
D000332:Aerobiosis; D000693:Anaerobiosis; D000818:Animals; D001419:Bacteria / Q000254:growth & development / Q000378:metabolism; D004032:Diet; D004063:Digestion; D004064:Digestive System / Q000382:microbiology*; D004463:Ecology; D004848:Epithelium / Q000382:microbiology; D005243:Feces / Q000382:microbiology; D005544:Forecasting; D005753:Gastric Mucosa / Q000382:microbiology; D005856:Germ-Free Life; D006801:Humans; D007413:Intestinal Mucosa / Q000382:microbiology; D007778:Lactobacillus; D009747:Nutritional Physiological Phenomena