Figure 5.

Diffusion behavior of labeled individual PLA₂ molecules. (A) Typical trajectories of individual PLA₂ molecules diffusing on the fluid region (white) and near the fluid/gel boundary (yellow) as observed in the background image (accumulated over 100 frames). Four of the trajectories colored in yellow are magnified in panel B. In three of the trajectories, it is possible to distinguish the hot spots (indicated by the red circles) where diffusion is slow. The color scale is sequential and does not indicate real time. The first data point is depicted in red and the last one in blue.