t cell threshold
"The situation is analogous to those entrance and exit exams that teenagers take to get out of high school and into college. The T cell threshold is like an exit requirement for graduation-one needs only score a minimal threshold to graduate and all students who demonstrate a simple competency in the subject matter will pass. B cell selection is more like the SAT-the higher the score, the better the chances of getting into college. "
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.