ImmuSmol developed a unique range of antibodies to visualize amino acid L-Arginine and its key metabolites, such as L-Ornithine and L-Citrulline, as well as polyamines like N1-Acetyl-Spermidine and N8-Acetyl-Spermidine, and related amino acids such as L-Lysine and Homoarginine. A range of research ELISA kits for easy measurements of Arginine metabolism is also available.