strepogenin
noun
strepo·gen·in
ˌstrep-ə-ˈjen-ən 
: a biologically active principle, characteristic chemical structure, or amino acid content attributed especially formerly to various proteins, peptides, or mixtures of them to account for their ability to stimulate growth of various microorganisms and especially one of the genus Lactobacillus (L. casei)
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“Strepogenin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/strepogenin. Accessed 30 Jun. 2025.
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