Amino Acid
Ball-and-stick model of the cystine molecule, an amino acid formed from two cysteine molecules.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Cystine 3D ball."
http://commons.wikimedia.org/wiki/File:Cystine_3D_ball.png
Wikimedia
Public domain.
