“…However, the development of various variants of the classical focus formation assay, namely the tumorigenicity assay (Fasano et al, 1984), expression cDNA cloning (Miki et al, 1991) and expression cloning by retroviral transfer of cDNA libraries (Whitehead et al, 1995a) gradually led to the discovery of various other transforming genes including neu (Shih et al, 1981), met (Cooper et al, 1984), ret (Takahashi et al, 1985), trk (Martin-Zanca et al, 1986), raf (Shimizu et al, 1985), dbl (Eva and Aaronson, 1985), hst (Sakamoto et al, 1986), mas (Young et al, 1986), lca (Ochiya et al, 1986), B-raf (Ikawa et al, 1988), tre (Nakamura et al, 1988), vav (Katzav et al, 1989), hhc (Yang et al, 1990), ufo/axl (Janssen et al, 1991;O'Bryan et al, 1991), ect , mos (Wang et al, 1993), cot/tpl-2 (Chan et al, 1993), tim (Chan et al, 1994a), TC21 (Chan et al, 1994b), ost (Horii et al, 1994), lbc (Toksoz and Williams, 1994), FGF-8 (Lorenzi et al, 1995), lfc (Whitehead et al, 1995b), lsc (Whitehead et al, 1996) and NET1 (Chan et al, 1996).…”