sickle cell anemia
"It turns out that being heterozygous for sickle cell anemia is like a natural malaria vaccination. In a place where malaria is rampant, this heterozygous sickle 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.