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. 1998 Dec 8;95(25):14833–14838. doi: 10.1073/pnas.95.25.14833

Figure 6.

Figure 6

MAPK and the induction of anteroposterior positional identity by bFGF. Animal caps were isolated at stage 8, held in VLCMR until intact control embryos reached stage 11, and treated with increasing concentrations of FGF. (A) Each sample was assayed for MAPK activity when control embryos reached stage 11. The maximal activation of MAPK observed over a range of 0.15 to 150 ng/ml was ≈4-fold. (B) The remainder were collected for RT-PCR assays when control embryos reached stage 24 (n = 6).