SINCE 1828
aequorin
noun
ae·quo·rin
| \ ēˈkwȯrə̇n, -ōr-\
plural -s
Definition of aequorin
: a bioluminescent protein of jellyfish (genus Aequorea) that emits light in response to the addition of calcium or strontium and is used to demonstrate the presence and distribution of calcium in cells
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Merriam-Webster unabridged
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