FIG. 3.

Effects of PMT fragments microinjected into quiescent Swiss 3T3 cells on induction of DNA synthesis. Representative fluorescence micrographs are shown. (A, C, E, and G) Injected cells, detected by use of anti-rabbit IgG-Cy3. (B, D, F, and H) The same fields of cells stained for BrdU. The cells were injected with KCl microinjection buffer (A and B), GST/1-506 (C and D), or GST/681-C (E to H). Panels G and H are at a twofold-higher magnification than panels A to F. The arrows indicate microinjected cells that were BrdU positive.