Fig. 4
Fig. 4
Standard fluorescent immunohistochemical staining was performed, and recorded by confocal microscopy (×40 magnification). Zebrafish embryos at the 1-cell stage were injected with control MO, 0.1, or 0.2 mM Apex1 MO, and allowed to develop for an additional 48 h before they were fixed and processed as described in Methods. Green fluorescence represents the expression pattern for glial fibrillary acidic protein (GFAP), while red fluorescence indicates the expression pattern for the indicated protein: Apex1 (