الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
 |  | from | 191 |  |  |
| | | from | 191 | | |
Abstract
Cancer is widely considered to be a multistep process in which normally growing or quiescent cell is transformed into one with hyperlastic phenotype and a fully neoplastic metasizing tumor. Tumors aise because the regulation of the cell growht and differentiation is affected by mutations in the genes controlling these processes(gareth&david,1995).