Specific microsatellite repeats (including five monomorphic mononucleotide makers: NR-24, BAT-25, CAT-25, BAT-26, and MONO-27) are amplified by PCR 19-21, and then the size of these microsatellite repeats in tumor and normal tissues were evaluated by capillary electrophoresis. Here, BAAT is linked to neoplasm.