The Influence of Alternating Magnetic Field on Escherichia coli Bacterial Cells

The effect of a low-frequency alternating magnetic field on the properties of E. coli bacterial cells in an aqueous medium have been studied in vitro. The experiments were performed with a daily grown culture of E. coli HB-101 cells obtained in a liquid LB medium. The samples were prepared by means of turbidity-controlled serial dilutions and then grown on a bactoagar. It is established that E. coli colonies grown upon exposure of a monolayer of cells in the alternating magnetic field had a smaller average diameter than the colonies not treated in the field. The number of cell colonies was increased, which indicated that the treatment of E. coli cells in a low-frequency magnetic field produced stimulation of the cell growth.