Invited Seminars and Lectures, Presentations at Scientific Meetings (2000-present) 
  1. "Pathobiology of chronic rejection - unifying concepts on susceptibility and resistance", Transplant Seminar, Ohio State University, Columbus, OH, March 15, 2000.
  2. "New Paradigm in Chronic Rejection", XVIII International Conference of the Transplantation Society, Rome, Italy, September 1, 2000.
  3. "Pathology and Pathobiology of Primary Sclerosing Cholangitis" AASLD Single Topic Symposium, Emory Conference Center, Atlanta, Georgia, September 16, 2000.
  4. "Transplantation Telepathology, Worldwide"; International Academy of Pathology, Nagoya, Japan, Oct. 16, 2000.
  5. "Transplantation Pathology Symposium", Chairman, International Academy of Pathology, Nagoya, Japan, Oct. 17, 2000.
  6. "Biliary Epithelial Cell Senescence Precedes Bile Duct Loss in Early Chronic Liver Allograft Rejection", International Academy of Pathology, Nagoya, Japan, Oct. 18, 2000.
  7. "Interactions between IL-6 and p21 in liver growth control". NCI Liver Stem Cell Meeting. Bldg 31, Bethesda, MD. Dec. 8, 2000.
  8. Chair: "Updates of Schemas for Diagnosis of Rejection in Abdominal Transplants", "Acute Liver Allogaft Rejection: Assessment of the Banff Schema for Grading", "Role of Antibody in Liver Transplantation", "Causes of Late Liver Allograft Dysfunction, with Emphasis on Recurrent or New Onset Disease", "Replicative Senescence of Biliary Epithelial Cells Precedes Bile Duct Loss in Early Chronic Liver Rejection", "Long-Term Effects of Low, Medium, and High Dose Immunosuppression Early After Transplantation", and "Transplantation Telepathology-Are We There Yet?". Sixth Banff Conference on Allograft Pathology, Banff, Alberta, Canada, April 21-26, 2001.
  9. "Role of Growth Factors in Cholangiocyte Growth". AASLD Single Topic Conference, Warrenton, VA, June 8, 2001.
  10. "Liver Regeneration". Living Donor and Split Liver Transplantation Symposium, Berlin, Germany, July 11, 2001.
  11. "Liver Histology in Chronic Rejection". ASTS/AST Symposium. Consensus Endpoints for Clinical Trials on Late Allograft Failure. November 5, 2001.
  12. "Cell Cycle Regulators and Barrier Function in Biliary Pathobiology". Pathology Retreat, Seven Springs, PA, July 12, 2002
  13. "Pancreatic Biopsy Pathologic Staging". Pancreas & Biliary Disease Thought Leader Conference, Nemacolin, PA, August 7, 2002.
  14. Chair: "Bioartificial Liver". XIX International Congress of the Transplantation Society, Miami, FL, August 27, 2002.
  15. "Biopsy in liver transplant recipients: Importance for therapeutic interventions". XIX International Congress of the Transplantation Society, Miami, FL, August 29, 2002.
  16. "Transplant Pathology/Chronically Inflamed Liver". Invited speaker. Visiting professor program, Ball Memorial Hospital, Muncie, IN, October 7, 2002.
  17. "Biopsy Monitoring of Allograft Recipients in a Tolerance Trial: the importance of grading of acute rejection and differences between organs" Invited speaker. 2003 Fellows' Conference: Advances in Organ Transplantation, Irving, Texas, March 14, 2003.
  18. Chair Liver Session, "Immunopathology of weaning immunosuppression after liver transplantation: How robust is the 'tolerance'?". Co-Chair Updates of Schema for Diagnosis and Treatment of Allograft Rejection, "The Banff schema for liver allograft rejection".The Seventh Banff Conference on Allograft Pathology, Aberdeen, Scotland. June 16-17, 2003.
  19. "A schema for histological grading of allograft small intestine acute rejection". VIII International Small Bowel Transplant Symposium, Miami, FL, September 12, 2003
  20. "The future of telepathology". APIII 2003, Pittsburgh, PA October 10, 2003.
  21. "Signaling in the Development of Hepatobiliary Disease" GI/Liver Research Seminar Series at Mt. Sinai Medical Center, New York, NY. October 15, 2003.