10 Medical diagnostic instruments, namely, syringe, needle, biopsy needle, array, particularly DNA-array, array reader, scanner, Imaging devices, hybridization machine, hybridization chamber, thermocycler, centrifuge, reaction tubes, centrifuge tubes, filter, rotator, mixer, beads, FACS, laser, particularly laser for microdissections, balloon instrument, magnetic devices for diagnosing tumors, coronary heart diseases, particularly restenosis, minimal residual diseases, infectious diseases, autoimmune diseases; diagnostic and testing apparatus for medical purposes, namely, syringe, needle, biopsy needle, array, particularly DNA-array, array reader, scanner, imaging devices, hybridization machine, hybridization chamber, thermocycler, centrifuge, reaction tubes, centrifuge, tubes, filter, rotator, mixer, beads, FACS, laser, particularly laser for microdissections, balloon instrument, magnetic devices, for testing for eukaryotic cells, cells of microscopic small biopsies, of cells out of tissue samples prepared with a laser, of cells isolated with FACS or with receptor/ligand binding, of chemical fixed tissue, of micrometastatic cells, of bone marrow cells, of samples from body fluids from amniotic fluid, liquor, blood, lymph, urine or bowel movement, of stem cells, cloned single cells or differentiated stages from specific cells of human tissues; medical diagnostic and testing apparatus, namely syringe, needle, biopsy-needle, array, particularly DNA-array, array reader, scanner, imaging devices, hybridization machine, hybridization chamber, thermocycler, centrifuge, reaction tubes, centrifuge tubes, filter, rotator, mixer, bead, FACS, laser, particularly laser for microdissections, balloon instrument, magnetic devices for testing animal cells for veterinary use