Fig. 1

Histopathological findings with UPEC infection. a: Glomerular congestion, epithelial cell necrosis in small renal tubules, and focal infiltration of inflammatory neutrophils and fewer lymphocytes (arrow). b: Cord-like infiltration of lymphocytes and plasma cells in the renal medullary interstitium. c: Mild hepatic congestion, perivascular infiltration of lymphocytes and plasma cells (arrow), and hepatocyte vacuolar degeneration. d: Thickening, hyperemia of the pulmonary alveolar wall and infiltration of lymphocytes and plasma cells. e: Congestion and hemorrhage in splenic red pulp. f: Expansion of the mesenteric lymph node sinuses by infiltration of lymphocytes and plasma cells. H&E, bar = 50 μm