A system for subjecting cells placed onto a surface of a vessel, to magnetofection with a fluid including magnetizable particles to be brought into interaction with such cells; said system including: - a surface carrier to support such vessel, such that when the system is in use, the surface has a first projection in a first direction which is substantially parallel to a direction of the gravity vector (g), and a second projection in a second direction which is substantially opposite to said first direction; and - a plurality of magnets to provide a magnetic field at a vicinity of the surface carrier for, in use, magnetizing the particles; said magnets being arranged to, in use, be moved substantially parallel to said surface and drive the particles by being turned around an axis substantially parallel to the gravity vector (g), said magnets are disposed within the first projection, and the system is adapted over a layout of said magnets to provide that, when such vessel is introduced to the system and the system is run: - either the system does not include any further magnet in said second projection, or - a first magnetic field strength available by said magnets from the first projection to such surface, is greater than any further magnetic field strength available from the second projection to such surface; wherein the magnets are arranged in an alignment, such that a pole of each of said magnets faces an opposite pole of a subsequent magnet on said alignment; and said alignment is arranged in a substantially circular configuration, such that gravitational and/or magnetic centers (c) of said magnets substantially form a circle around the axis substantially parallel to a gravity vector (g) when the system is in use; and the movement of said plurality of magnets is to be performed in a direction substantially following a sequence of such opposite poles. for subjecting cells placed onto a surface of a vessel, to magnetofection with a fluid including magnetizable particles to be brought into interaction with such cells; said system including: - a surface carrier to support such vessel, such that when the system is in use, the surface has a first projection in a first direction which is substantially parallel to a direction of the gravity vector (g), and a second projection in a second direction which is substantially opposite to said first direction; and - a plurality of magnets to provide a magnetic field at a vicinity of the surface carrier for, in use, magnetizing the particles; said magnets being arranged to, in use, be moved substantially parallel to said surface and drive the particles by being turned around an axis substantially parallel to the gravity vector (g), - a surface carrier to support such vessel, such that when the system is in use, the surface has a first projection in a first direction which is substantially parallel to a direction of the gravity vector (g), and a second projection in a second direction which is substantially opposite to said first direction; and - a plurality of magnets to provide a magnetic field at a vicinity of the surface carrier for, in use, magnetizing the particles; said magnets being arranged to, in use, be moved substantially parallel to said surface and drive the particles by being turned around an axis substantially parallel to the gravity vector (g), said magnets are disposed within the first projection, and the system is adapted over a layout of said magnets to provide that, when such vessel is introduced to the system and the system is run: - either the system does not include any further magnet in said second projection, or - a first magnetic field strength available by said magnets from the first projection to such surface, is greater than any further magnetic field strength available from the second projection to such surface; - either the system does not include any further magnet in said second projection, or - a first magnetic field strength available by said magnets from the first projection to such surface, is greater than any further magnetic field strength available from the second projection to such surface; wherein the magnets are arranged in an alignment, such that a pole of each of said magnets faces an opposite pole of a subsequent magnet on said alignment; and said alignment is arranged in a substantially circular configuration, such that gravitational and/or magnetic centers (c) of said magnets substantially form a circle around the axis substantially parallel to a gravity vector (g) when the system is in use; and the movement of said plurality of magnets is to be performed in a direction substantially following a sequence of such opposite poles.