  In this paper, it is first discovered that EcN has natural magnetically
controlled properties, that is, E coli Nissle 1917 cells move in a gradient
magnetic field of permanent magnets without artificial magnetic labeling. It is
also shown in the paper that the cultivation of EcN in a medium enriched with
iron chelates and under the influence of an external magnetic field increases
several times the magnetophoretic mobility of E coli Nissle 1917 cells compared
to cultivation under standard conditions. Thus, the speed of movement of E coli
Nissle 1917 cells in a gradient magnetic field of laboratory magnets is
achieved of the order of several mm/s. It has also been shown for the first
time that the cultivation of E coli Nissle 1917 biomass is accelerated by
cultivation in an external magnetic field, while the change in the
concentration of iron chelates in the medium has no effect on the cultivation
dynamics of the E coli Nissle 1917 culture.
