Figure 5.
Possible Motion - Reaction - Diffusion feedback loop in chronic implantation. The positive feedback loops are indicated in red. Key element in the proposed mechanism is the sustained gradient of ROS. Depicted pathways are based on the recent findings of real-time immuno-chemical expression patterns (Karumbaiah et al., 2013; Saxena et al., 2013), two-photon imaging (Rosidi et al., 2011; Kozai et al., 2012) and detailed histological characterizations (Azemi et al., 2011; Potter et al., 2013; Woolley et al., 2013).