Development -- Fisher et al. 128 (21): 4329 Figure IG2

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Fig. 2. Blotting using phospho-specific antibodies to activated Erk1/2 MAP kinases shows them to be present in both the ureteric bud (Bud) and the mesenchyme of normal developing kidneys (Mes), the p42 (Erk 2) signal being stronger than that of p44 (Erk1).