Figure 1. Incorporation of siRNA into retinal explants. A: Alexa Fluor red-labeled dsRNA oligonucleotides were found in most cells in outer nuclear layers (ONLs) and inner nuclear layers (INLs) 24 h after transfection. B: DAPI staining shows the nuclei in the same section as in A. C: Image of negative control dsRNA without fluorescent labeling shows no staining. D: DAPI staining shows the nuclei in the same section as in C.