Abstract: Disclosed is a process for determining the resistance of a microorganism to at least one antimicrobial using a field-flow fractionation device. Also disclosed is the use of a field-flow fractionation device according to the process and a kit for determining the resistance of a microorganism to at least one antimicrobial, using a field-flow fractionation technique.

Abstract: Method for determining, in vitro, the cell aggressiveness grade of cancer cells or for detecting cancer stem cells in a cell sample originating from a solid tissue suspected of being cancerous, includes: a) dissociating the cell cluster constituting the sample into a suspension of whole and viable isolated cells, b) macroscopically sorting the cells to obtain homogeneous subpopulations, c) calibrating at least one microwave electromagnetic sensor resonating at its own resonance frequency, d) presenting the dissociated and sorted cells to the calibrated sensor, e) interrogating the sensor and determining its new resonance frequency having received the cells, f) calculating the variation in overall dielectric permittivity of the cells according to the variation in working frequency, which constitutes the electromagnetic signature of the cells. The macroscopic sorting is without prior labelling and is based on the intrinsic properties of the cells. A kit for implementing the method is also described.

Abstract: The present invention relates to a separation device notably for a flow-force fractionation of suspended substances in a liquid carrier, said separation device comprising a separation channel and a counter-channel. The object of the present invention is mainly the separation of living cells, preferably of human origin, in particular cells which are found in body fluids.

Abstract: The present invention relates to a separation device notably for a flow-force fractionation of suspended substances in a liquid carrier, said separation device comprising a separation channel and a counter-channel. The object of the present invention is mainly the separation of living cells, preferably of human origin, in particular cells which are found in body fluids.