Owen Herrock, a graduate student in the Pharmacology and Toxicology program, will defend his dissertation, "The Role of B Lymphocytes in the Pathophysiology of Hypertension in Response to Placental Ischemia," at 1 p.m. on Friday, March 3, in the Research Wing – Lower Amphitheatre R153. All Medical Center faculty, staff, and students are invited to attend.