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Fig. 7. Organ culture of Sall1-deficient metanephric mesenchyme. (A) Heterozygous metanephric rudiment cultured for 3 days. (B) Sall1-deficient metanephric rudiment cultured for 3 days. Only residual ureter is evident. (C) Sall1-deficient metanephric rudiment cultured for 3 days. A limited branching is observed. (D) Heterozygous metanephric mesenchyme cultured with spinal cord for 5 days. (E) Sall1-deficient metanephric mesenchyme cultured with heterozygous spinal cord for 5 days. sp, spinal cord; tb, renal tubules. Scale bars: 100 µm.