BERN, Switzerland--(BUSINESS WIRE)--CSL Behring today announced data on the use of L-proline as a new single stabilizer for Immune Globulin Intravenous (Human) 10% Liquid (Privigen®). Researchers found that the use of L-proline, a naturally occurring amino-acid, inhibited dimer formation more efficiently when compared with other additives like glycine, used as a stabilizer in conventional immunoglobulin products. In addition, the formulation with L-proline was found to prevent aggregation. The data were presented today at the American Congress of Allergy, Asthma and Immunology (ACAAI) in Dallas, Texas.