poly a tail
" The poly A tail is like a time control for the mRNA. mRNA is pretty unstable and degrades rapidly in the cell. The 5' cap and poly A tail help the mRNA's longevity. The longer the tail, usually, the longer the mRNA hangs around and translates more proteins before it is degraded."
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.