oncogenes c-myc , c-raf , c-erb-a , c-ras-h , c-ski , and c-sis were expressed in both proliferating and differentiated cardiac muscle tissue and cells , whereas c-myb expression was not observed in either . c-src was expressed only in neonatal cardiac muscle tissue and cells . c-fms , c-abl , and c-ras-k were expressed in tissue from both neonatal and adult animals but only in purified cells from neonatal animals . c-fes/fps was expressed only in neonatal cardiac muscles cells . c-fos expression was not observed in cardiac-muscle tissue from either neonatal or adult rats , but surprisingly was abundantly expressed in freshly isolated cardiac-muscle cells from animals of both ages .
C0007589
differentiated
C0007634
cells