Abstract: The present invention is directed to a method for the preparation of a non-living micro/nanoscale biosynthetic device capable of giving an information of a state of a system to analyse. Preferably, said device is used as an assay diagnostic, or to predict the risk, of a disease, or for the classification of mammal, preferably human pathologies. The invention also relates to a method for the identification and/or the quantification of a compound in a sample. Finally the present invention includes a kit comprising the biosynthetic device obtained by the method of the present invention.

Abstract: The present invention relates to the field of biological diagnosis in oncology. It relates to a method and apparatus for detecting and/or characterizing tumor cells by detecting one or more elements of the tumor cell secretome, in particular one or more peptides or proteins, and, in particular, one or more tumor markers. The invention also relates to detecting and/or characterizing droplets of tumor cells and their method of preparation.