Source:http://linkedlifedata.com/resource/umls/id/C1533585
CSP: artificial constructs composed of DNA fragments of different genes; used in gene structure-function studies, experimental gene therapies, and in the field of biotechnology.,NCI: A gene made by joining parts of two different genes. Fusion genes may occur naturally in the body by transfer of DNA between chromosomes. For example, the BCR-ABL gene found in some types of leukemia is a fusion gene. Fusion genes can also be made in the laboratory by combining genes or parts of genes from the same or different organisms.,NCI: A hybrid gene created by joining portions of two different genes (to produce a new protein) or by joining a gene to a different promoter (to alter or regulate gene transcription). These can be created by chromosomal aberration or by laboratory methods. (from On-line Medical Dictionary and NCI)