Fig. 4.

Gene expression in control and Bmp7 mutant P2 kidneys. (A-H) In situ hybridization of controls (A-D) and Bmp7 mutants (E-H). The gene is indicated at the top of each column. (A,E) Yellow arrows, renal vesicles; red arrows, ureteric bud derivatives; green arrows, collecting ducts. (B,F) Yellow arrows, podocytes in maturing glomeruli. (C) Yellow arrows, renal vesicles. (D,H) Green arrows, Wnt4 expression in papilla. Scale bars: 100 µm (A-C,E-G); 500 µm (D,H). Three biological replicate kidneys were examined at each time point.