metallothionein
noun
me·tal·lo·thio·ne·in
-ˌthī-ə-ˈnē-ən 
: any of various metal-binding proteins involved in the metabolism of copper and zinc in body tissue (as of the liver) and in the binding of toxic metals (as cadmium)
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“Metallothionein.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/metallothionein. Accessed 23 Nov. 2024.
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