![](http://www.alamy.com/thumbs/6/9C8AF250-EF3E-4ED5-9260-8281D48921D4/M5GGA1.jpg)
Leu-enkephalin endogenous opioid peptide molecule. Skeletal formula.
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Photo credit: © molekuul.be / Alamy / Afripics
License: Royalty Free
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Keywords: atomic, atoms, chemical, chemistry, composition, compound, drawing, endogenous, enkefalin, enkephalin, factor, flat, formula, growth, icon, leu-enkephalin, line, molecular, molecule, ogf, opioid, peptide, receptor, skeletal, structure, vector, vectors