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Immunohistochemical analysis of VEGF. (A) Only the flat-mounted 6-month-old transgenic retinas showed extensive groups of cells producing VEGF (red). Inset shows the location in the retina. (B) VEGF (red) was detected in GFAP-expressing glial cells (green). Scale bars: 44 μm (A) and 23 μm (B).
