Fig. 4. Detection of dFMR1 mRNA in dFMRP granules by FISH Fig. 4. Detection of dFMR1 mRNA in dFMRP granules by FISH.(A) Schneider cells were transfected with GFP-dFMRP. Detection of dFMR1 mRNA in dFMRP granules by FISH.(A) Schneider cells were transfected with GFP-dFMRP. Cells were then fixed, permeabilized, and incubated with 3 nM of Alexa Fluor 488-labeled antisense RNA probe to detect dFMR1 mRNA (panels 6 and 8) or with Alexa Fluor 488-labeled sense probe (panels 2 and 4) as control. dFMRP granules were visualized as green fluorescence. Scale bar: 10 µm. (B) Densitometry quantification of FISH poly(A)+ mRNA signal was done with Photoshop software as above. Cristina Gareau et al. Biology Open 2013;2:68-81 © 2012. Published by The Company of Biologists Ltd