Abstract: The present invention relates in particular to a method for the quantitative measurement of biomolecular targets that have been deposited on a biochip (1) of the type with a matrix of probes hybridized by the targets, the matrix comprising a multitude of measurement points (2) each comprising a plurality of probes, characterized in that it comprises the following steps: a) at least one laser beam (18) is focused onto each measurement point, in order to extract therefrom a hot confined plasma comprising a chemical element to be quantified that is present in the targets and optionally in the probes; b) the light emission lines from the plasma are detected and analysed for each measurement point, by measuring the respective intensities of these lines; and then c) the concentration in each measurement point of the element or of a group incorporating it within the targets is determined via a prior calibration of the lines establishing a correlation between the intensities of the lines specific to the element to be

Abstract: The invention relates to a method of fabricating an array of capillaries of a chip, the method comprising the steps consisting in depositing at least one layer of a meltable or polymerizable construction material on a support plate, focusing and moving a laser beam on and over said layer respectively to melt or polymerize the material so as to form the side walls of the capillaries, and then fastening a cover plate on the side walls of the capillaries. The invention also provides a chip including an array of capillaries in which chemical or biological molecules are fixed, and a chip including an array of chromatography and/or electrophoresis capillaries.

Abstract: The invention relates to a method of analysing molecular targets contained in a complex mixture, comprising the following steps consisting in: a) bringing the mixture of molecular targets to be analysed into contact with an array of different types of primary probes, whereby each type of primary probe forming the array can bind specifically to a type of target selected from among the molecular targets, under conditions that enable specific binding between the molecular targets and the primary probes; b) optionally eliminating the primary probes that are not bound specifically to a molecular target; c) separating the molecular targets and the primary probes which are bound specifically in a probe/target complex, such as to recover the array of primary probes representing a fingerprint of the molecular targets to be analysed; and d) quantitatively analysing the primary probes eluted in step c.

Abstract: The invention relates to an image analysis process for measuring the signal on biochips organized into one or several blocks each comprising a large number of spots each composed of at least one probe, the said process being characterized in that it comprises the following steps: a deposit is made with a constant pitch, the spots appearing in the form of a periodic and regular signal; this periodicity property is used to identify the position of the blocks and the spots, this periodicity being searched for on projections of the image in the x and y directions.

Abstract: The invention relates to a device for separating and/analyzing several molecular targets dissolved in a complex mixture which is characterized in that it comprises a) a matrix of micro-columns, wherein each micro-column (2) comprises an immobilized molecular probe for retaining a specific molecular target contained in the complex mixture by specific probe/target linkage, b) a first capillary network (3) for circulating the complex mixture introduced into the inventive device towards each micro-column of the matrix defined in a), c) a second capillary network (4) for circulating, after elution, the molecular targets retained on the micro-columns towards a sensor (5) for carrying out the recovery and/or analysis thereof, and d) if necessary, a sensor (5), preferably in the form of a mass spectrometer, for carrying out the recovery and/or analysis of different molecular targets.

Abstract: The invention relates to an organized array of biological or chemical probes bonded to a support by magnetic coupling using a fixing vector. The support may include a permanent magnet or present electrically-induced magnetization. The fixing vectors may be constituted by magnetic beads functionalized to be capable of bonding specifically to one particular type of biological probe.

Abstract: The invention relates to an image analysis process for measuring the signal on biochips organized into one or several blocks each comprising a large number of spots each composed of at least one probe, the said process being characterized in that it comprises the following steps: