selenomethionine
noun
sel·e·no·me·thi·o·nine
-mə-ˈthī-ə-ˌnēn 
: a selenium analog C5H11NO2Se of methionine in which sulfur is replaced by selenium and that is used as a diagnostic aid in scintigraphy especially of the pancreas and as a dietary supplement
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“Selenomethionine.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/selenomethionine. Accessed 5 May. 2025.
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