The study of microbial diversity (microecology) is a science that studies the mutual dependence and restriction between the normal microbial community and its host. It involves the adaptation of organisms to their internal environment (including microbial biochemistry and biophysical environment), and is closely related to human health
Development history of sequencing

Sequencing platform
Second-generation sequencing platform: NovaSeq 6000
Third-generation sequencing platform
content analysis
OTU(Operational Taxonomic Units)OTU(Operational Taxonomic Units)
Clustering and annotation of Operational Taxonomic Units (OTU)
Summary table of relative abundance: Species composition + relative abundance
Species composition classification (Phylum Compendium species)
Association analysis (correlation between bacteria, RDA/CCA analysis, correlation between bacteria and metabolites)

