Abstract: Biological sample processing system comprising an imaging unit (2) comprising a digital image processing system and at least one microscope including at least one lens (14), a sample processing station (3) comprising a handling platform (3) including a support (17) and a displacement mechanism for moving the support (17), and a sample processing unit (7) mounted on the handling platform (5). The sample processing unit (7) comprises a tissue slide holder (11) for mounting thereon a tissue slide (34) with a biological sample (36) fixed thereon and a microfluidic cartridge holder (9) for mounting a microfluidic cartridge (4) thereon. The tissue slide holder (11) is coupled to the microfluidic cartridge holder (9) via a coupling (13) allowing the microfluidic cartridge and the tissue support to be mounted and removed from the sample processing unit in an opened position, and in a closed position for the tissue support (34) to be in sealing contact with the microfluidic cartridge (4).