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Numbers of the most critical genes that are needed and their locations [30].
| Specimen | Chromosomal Location |
|---|---|
| Stool DNA | 5q21, 17p13, and 12p |
| Tissue | 17p13, 3p22, 2q31–33, 2p21, 18q21, 20q11, 18q21, 2p21, 7p22, and 3p21 |
| Colonic effluent and colonic DNA | 12p |
