پرونده:L-serine-3D-balls.pngDescriptionL-serine-3D-balls.png Ball-and-stick model of the L-serine molecule, one of the 20 common amino acids used by living organisms to form proteins
پرونده:L-Glyceric-acid-3D-balls.pngglyceric acid molecule, a natural three-carbon sugar acid. Date 28 July 2010 Source Derived from File:L-serine-3D-balls.png. Author Jynto and Ben Mills
پرونده:D-Glyceric-acid-3D-balls.pngglyceric acid molecule, a natural three-carbon sugar acid. Date 28 July 2010 Source Derived from File:L-serine-3D-balls.png. Author Jynto and Ben Mills