Table 1.

Selected segment-specific marker genes of the pro- and metanephric nephron

Note that only a single clcnk gene is known in Xenopus, whereas there are two mouse clcnk genes—clcnka and clcnkb. The expression of Xenopus clcnk in the intermediate, distal, and connecting tubules therefore has to be compared with the combined renal expression domains of mouse Clcnka and Clcnkb. See Figures 1 and 3 for abbreviations of Xenopus and mouse nephron segments, respectively.

(acc. no.) Accession number; (n.d.) not determined.