Decreased microglial activation in mice treated with saline injection and DHA injection plus DHA-enriched diet after spinal cord injury. Representative images taken from the epicentre show that resting microglial cells with ramified thin processes were noted in the naïve tissue (A and D). The microglia shape in saline-treated injured controls was larger and irregular (B and E), reflecting activation. At 28 days after surgery, there appeared to be less Iba1 immunoreactivity in DHA-treated animals (C and F) compared with saline-treated animals (B and E). The effect is more marked in the dorsal horn compared to the ventral horn. Scale bar = 50 μm. (Lim et al., 2010).