These vesicles are phospho-lipid spheres that encapsulate neurotransmitters for release into a synapse. Paintballs are gelatine capsules that encapsulate a water dye solution that can be shot out of a gun.
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.