title: Introduction to the special issue "Probiotic bacteria and human gut microbiota".
authors.affiliation: Laboratory of Probiogenomics, Department of Genetics, Biology of Microorganisms, Anthropology and Evolution, University of Parma, Parma, Italy, marco.ventura@unipr.it.
authors.forename: Marco
authors.initials: M
authors.lastname: Ventura
authors.forename: Giuditta
authors.initials: G
authors.lastname: Perozzi