Figure 5.

Dynamics of GLUT4-eGFP in response to insulin. (A) Panels represent the 2D projection of 21-image sections taken every 4 s, as indicated in the upper left corner. Arrows point to structures near the juxtanucelar region, which display rapid changes in shape. The bar at the lower left corner of the first panel represents 1.7 μm. (B) Panels shown were taken after 5 min of insulin addition, at 4-s intervals, as indicated in the top left corner. The arrow follows the trajectory of a stream of GLUT4-eGFP from the juxtanuclear region to the plasma membrane (see QuickTime Demo 2).