<p><b>Copyright information:</b></p><p>Taken from "Intracellular mediators of transforming growth factor β superfamily signaling localize to endosomes in chicken embryo and mouse lenses in vivo"</p><p>http://www.biomedcentral.com/1471-2121/8/25</p><p>BMC Cell Biology 2007;8():25-25.</p><p>Published online 25 Jun 2007</p><p>PMCID:PMC1914053.</p><p></p> A. Rab7 (red), pSmad1 (green), TOTO-1 (blue). B. Rab7 (red), pSmad2 (green), TOTO-1 (blue). Both pSmad1 and pSmad2 co-localize with Rab7 on a small number of cytoplasmic vesicles. Nuclear staining for pSmad1 and pSmad2 is mostly obscured by the strong fluorescence of the nucleic acid stain, TOTO-1
