POSTER SESSION I - STOWELL-ORBISON AWARDS COMPETITION Monday, March 26, 2007   —  9:30 AM - 12:00 Noon Convention Center, Exhibit Hall B - 1 Click on the blue numbers in parentheses to display abstracts. Click the button next to any title to add to Itinerary Planner... ...then notice the 'Event Added' prompt in the toolbar above as feedback:   KIDNEY PATHOLOGY Poster# Title and Authors Itinerary Planner 173 Alpha- Actinin -4 Defficient Mice Develop Focal and Segmental Glomerulosclerosis with Features of Collapsing Glomerulopathy (1240) S Alwaheeb, JM Henderson, A Weins, SV Dandapani, MR Pollak - Brigham and Women’s Hospital, Boston, MA; Brigham and Women’s Hospital/Harvard Institutes of Medicine, Boston, MA Add 174 Non-Neoplastic Renal Lesions Are Often Unrecognized: A Review of 248 Adult Tumor Nephrectomy Specimens (1245) KJ Henriksen, SM Meehan, A Chang - The University of Chicago, Chicago, IL Add 175 Incidence and Prognostic Value of CD20 Positive B-Lymphocyte Infiltrates in Renal Allograft Biopsies with Acute Cell Mediated Rejection (1253) BS Mohammed, W Tsai, H Rahman, E Kraus, L Racusen, M Haas, S Bagnasco - Johns Hopkins University School of Medicine, Baltiomre, MD; Johns Hopkins University School of Medicine, Baltimore, MD Add