cancers Article Salivary Gland Function, Antioxidant Defence and Oxidative Damage in the Saliva of Patients with Breast Cancer: Does the BRCA1 Mutation Disturb the Salivary Redox Profile? Beata Sawczuk 1,* , Mateusz Maciejczyk 2 , Magdalena Sawczuk-Siemieniuk 3, Renata Posmyk 4 , Anna ...