Studies on the association of malondialdehyde as a biomarker for oxidative stress and degree of malignancy in dogs with mammary adenocarcinomas oleh Maike Schroers, Beate Walter, Stine Fischer, Jessica Cremer, Eva‐Maria Bauer, Yury Zablotzki, Monir Majzoub‐Altweck, Andrea Meyer‐Lindenberg