"The mitochondrion is like one bag inside another. This is the inner space of the mitochondrion,. where the Krebs cycle enzymes ..."
"The structure of a mitochondrion is like an accordion that is kept in a leather case. This is because a mitochondrion has two membranes, one inside the other."
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.