Figure 5

Immunofluorescence in the NG97(ht) 20 ^th cell passage for (A) fibronectin and (B) laminin expression which were represented by a diffusely cytoplasmatic pattern, hot spot areas (#) and some fibrils (*) deposition in the ECM and increase of polymerization in the lamelipodia cytoplasmatic extensions (arrow) (original magnification: 400×). (Positive controls with cells of cloned human thymic epithelial lineage were assayed; however the data are not displayed here).