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. 1997 Jun 24;94(13):7047–7052. doi: 10.1073/pnas.94.13.7047

Figure 3.

Figure 3

The morphology of embryonic cells in cultures grown in N2 medium (1), treated with FGF-2 (2), or FGF-4 (3), or pretreated with peptide P2 followed by FGF-2 (4) was similar, indicating that the peptides were not toxic.