FIGURE 6-17 Neurotoxicity Domoic acid damage in this rat’s hippocampus and to a lesser extent in many other brain regions, indicated by the darkest coloring. Domoic acid, a Glu antagonist, is the causative agent in amnesic shellfish poisoning, which can result in permanent short-term memory loss, brain damage, and in severe cases, death.

Micrograph from NeuroScience Associates