Fig. 5. Nephrons in Fgf8 hypomorphs lack the loop of Henle. (A-L) In situ
hybridization assays in vibratome sections of E18.5 normal and Fgf8
hypomorph kidneys, for expression of the genes indicated, identifies podocytes
(A-C), proximal tubules (D-F) loop of Henle (G-I) and distal tubules
(J-L).