Figure 7. Schematic representation of the domains visualized in this study.

Two muscle end domains and the central domain given in red are superimposed on electron micrograph of muscle 12. The domains are defined as areas from which the fluorescence is lost in the course of the FLIP experiment due to the mobility of the mRNAs resulting from the low affinity of the GFP-tagged mRNAs for the binding sites in the domain or the absence of binding sites. The borders of the domains are positioned at some distance from the nuclei thus taking into account the putative limited movement around the nuclei due to the prolonged association of the mRNAs to up to now undefined structures present close to the nuclei.