Prebiotics are often used to make foods richer in fibre. Certain prebiotics – polysaccharides consisting of many monosaccharides (mannoses) linked in a specific way (β-1→4-glycosidic) – exhibit immunostimulatory effects alongside these properties. This is the conclusion of an international team of scientists with the involvement of the Paul-Ehrlich-Institut. The new findings could be important for the development of immunostimulatory foodstuffs as well as new adjuvants for vaccines. „Cells“ reports on the results in its online edition dated July 14, 2021.