Langevinin

Could you please clarify what Langevinin refers to? There isn’t a single widely recognized topic by that exact name in standard references. For example, it could refer to:

- a specific antimicrobial peptide (such as Langevinin-1 or Langevinin-2) reported from amphibian skin,

- a fictional or hypothetical peptide,

- something named after a person (for instance in physics or chemistry contexts related to Langevin’s work),

- or another organism, protein, or molecule with that name.

If you specify the context or provide a source, I can draft a concise, neutral wiki-style article (under 300 words) tailored to that Langevinin. If you’d like, I can also produce a fictional, clearly labeled stub for Langevinin.