The present invention relates to DNA sequences from regions of copy number change on chromosome 20. The sequences can be used in hybridization methods for the identification of chromosomal abnormalities associated with various diseases.
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with government support under Grant Nos. DE-AC-03-76SF00098 and DE-AC-03-79SF00098 awarded by the Department of Energy, CA58207 awarded by the National Institutes of Health, and 94-05-0021 awarded by the National Institute Standards Tech. The government has certain rights in this invention.