"Signal transduction is like a relay race. For example, a cell surface receptor protein might detect a growth factor. The receptor will pass along the information that it has "seen" a growth factor outside of the cell."
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.