1. Procyanidins extracted from pinus maritima bark;Virgili,1999
2. Procyanidins extracted from pine bark protect alpha-tocopherol in ECV 304 endothelial cells challenged by activated RAW 264.7 macrophages;Virgili;FEBS Letts.,1998
3. Pycnogenol inhibits macrophage oxidative burst, lipoprotein oxidation and hydroxyl radical induced DNA damage;Nelson;Drug Dev. Indust. Med.,1998
4. Rong, Y.; Li, L.; Lau, B. H. Pycnogenol protects vascular endothelial cells from t-butyl hydroperoxide induced oxidant injury. Biotechnol. Ther. 5:117–126; 1994–95.
5. Flow cytometric determination of cellular thiols;Sen;Methods Enzymol.,1998