cliparts/9/f/6/4/clipart-arginine-amino-acid-9f64.svg image/svg+xml Open Clip Art Library Arginine (amino acid) 2010-05-21T04:30:31 A ball-and-stick model structure of basic (positively-charged) amino acid arginine (Arg, R). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. http://openclipart.org/detail/61561/arginine-(amino-acid)-by-j_alves J_Alves acid amino amino acid arginine basic biology charged chemistry clip art clipart model positive science structure