A system for generating data relating to a tissue core comprises a core needle biopsy module configured to obtain a tissue core from a locus within the body, and a tissue disintegration module operably connected to the core needle biopsy module and configured to receive a tissue core from the core needle biopsy module and convert at least a portion of the tissue core into gaseous tissue molecules. The system also comprises first vacuum pump means configured to convey a tissue core from the needle biopsy module to the tissue disintegration module, and second vacuum pump means configured to convey gaseous tissue molecules from the tissue disintegration module to an analyser module.