Short description

Microbiome refers to all of the microorganisms that colonise a person or another living being.

Detailed description

The composition of the microbiome varies from person to person. Bacteria make up the majority of the human microbiome: Bacteria living in and on the human body outnumber the cells of the human body. Most of these bacteria colonise the gastrointestinal tract. They usually fulfill tasks important for humans such as the production of vitamins or the displacement of pathogens. They influence the immune system and are partly affected by drugs themselves.