The invention relates to a device for capture of cellular biomarkers circulating in an animal or human biological flow, characterised in that it is suitable for use in vivo and in that it comprises a means of filtration intended to retain the said cellular biomarkers, the said means of filtration comprising at least one through-aperture the dimensions of which are suitable for retaining the said cellular biomarkers and being integral with a support, the support taking the form of a hollow component.
