Antibodies used in this study were mAb 203–217 directed against the core domain of mouse Annexin A7 [6] (purified IgG, 1:50) specifically recognizing both Annexin A7 isoforms [[6,10], and data not shown], a polyclonal antibody against mouse Annexin A7 [10] (1:200), a polyclonal antiserum raised against the astrocyte-specific intermediate filament glial fibrillary acidic protein (GFAP; DAKO, 1:400), anti-β-tubulin (Sigma, 1:1000), anti-Emerin (novocastra, 1:2000), and polyclonal anti-LAP2α (kindly provided by Ronald Foisner, 1:5000).