nacre
- n the iridescent internal layer of a mollusk shell
- The mollusk instead coats the intruder with nacre, the secretion used to make its shell, forming a pearl.
- Why not implant an irritant like a grain of sand in a baby oyster, and see if the oyster would coat it with layers of nacre and thus form a pearl?.
- For a hemorrhagic stroke, the recipe Liu recommends reads like a shopping list for the witches in Macbeth: thinleaf milkwort root to soothe the mind; nacre to calm the liver and .