Light microscopy of S2 cells. In (A) the P0 transfected S2 cells are not induced to express protein and show only limited aggregation tendencies. In (B) the transfectants were induced with copperions and cell aggregates are clearly visible already 1-2 hours after induction. Pictures were taken at 10 x magnification.
Ekici et al. BMC Cell Biology 2002 3:29 doi:10.1186/1471-2121-3-29