scanning electronmicroscopy of balb/3t3 cells and derived tumor cells on teflon substrates ( on which only the tumor cells and not the parent balb/3t3 cells could grow ) revealed that the two cell types were remarkably similar in appearance , except that the tumor cells were larger and showed many more microvilli that tended to concentrate over the nucleus .
C0007634
cells
C0026049
microvilli