主题词：Organ Transplantation Techniques and Outcomes; Renal Transplantation Outcomes and Treatments; Transplantation: Methods and Outcomes; Liver Disease and Transplantation; Organ Donation and Transplantation; Liver Disease Diagnosis and Treatment; Renal and Vascular Pathologies; Cytomegalovirus and herpesvirus research; Neurological Complications and Syndromes; Organ and Tissue Transplantation Research; Polyomavirus and related diseases; T-cell and B-cell Immunology; Renal Diseases and Glomerulopathies; Immune Cell Function and Interaction; Pharmacological Effects and Toxicity Studies; Pancreatic function and diabetes; Hepatitis C virus research; Cardiac Ischemia and Reperfusion; Viral-associated cancers and disorders; Pregnancy and Medication Impact; Mechanical Circulatory Support Devices; Xenotransplantation and immune response; Clinical Nutrition and Gastroenterology; Pneumocystis jirovecii pneumonia detection and treatment; Complement system in diseases