| abstract |
A single-stranded deoxyribonucleic acid molecule having a length of less than about 25 kb comprises at least three distinct nucleotide sequences which are the sites for incorporation into a chromosome of a deoxyribonucleic acid molecule encoding a deleterious gene. Deoxyribonucleic acid probes have been prepared from such molecules and are useful as hybridization probes for detecting chromosomal deoxyribonucleic acid which has a deoxyribonucleic acid molecule encoding a deleterious gene, i.e. oncogene, incorporated therein. A single-stranded deoxyribonucleic acid molecule derived from human chromosome 22 which is about 5.8 kb in length contains sites for incorporation of a deoxyribonucleic acid molecule encoding the oncogene c-abl derived from human chromosome 9. Deoxyribonucleic acid probes have been prepared from this molecule and used to detect the abnormal Philadelphia chromosome and chronic myelocytic leukemia. |