Image
Figure Caption

Figure 4—figure supplement 1. Immunostaining of zebrafish tumors for pERK1/2.

(A) Immunofluorescence staining of zebrafish outgrowth at 72 hpf for pERK1/2 (red) eGFP2A-EWSR1-FLI1 (green). Arrows indicate cells positive for pERK1/2 and negative for EWSR1-FLI1. Scale bars, 20 μm. (B) Immunohistochemistry (IHC) staining of sections of zebrafish tumor and control zebrafish with anti-pERK1/2 antibodies. Scale bars, 100 μm.

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