Nature 394 909–913 (1998)

In Fig. 1 of this Letter, the key in all panels was incorrect: black bars should be +TGF-β, and white bars should be −TGF-β; in addition, the c-Fos Smad3/4 bar colours were transposed in panel b. The correct figure is shown here.

figure 1

Figure 1

In Fig. 3f, right panel, the symbols should all have been plus signs, as shown here. There were also two typographical errors in Fig. 3a (1NL, not 31NL; 4NL, not 34NL).

figure 2

Figure 3