摘要
The gut microbiota(GM)is an assorted ecosystem,composed of viruses,fungi,protozoa,archaea,and especiallybacteria,which exist in a definite symbiosis betweeneach other and the host(human)as well.Increasing datadocument that GM plays key parts in human physiology,taking part in the digestive process,vitamin B synthesis,promotion of angiogenesis and nerve functionality,andnotably in the maturation and modulation of the immunesystem.