On the cover: Renal progenitor cells (RPCs) injected into the retroperitoneum of a late-stage mouse embryo developed glomeruli with capillary loops (upper panel). In contrast, glomeruli developed ex vivo from RPC show no capillary structures (lower panel). (Red: endothelial cell marker CD31; white: nephrin; green: transplanted GFP-RPC; blue: DAPI).
Image supplied by Dr. Shuichiro Yamanaka et al., Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan