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The MUC 6 mucin cDNA was isolated from a human stomach cDNA library and has been shown to be expressed in a number of other tissues in the gastrointestinal tract, including the gallbladder, pancreas, and parts of the ileum and colon. Here we establish that MUC 6 is expressed transiently in the nephrogenic zone of the kidney in the early mid-trimester of development. MUC 6 transcripts were detected in the epithelium of ureteric buds at 13 weeks and at lower levels from 17 to 23 weeks of gestation. Traces of MUC 6 mRNA were seen in the collecting ducts but not elsewhere in the developing kidney, and MUC 6 glycoprotein was detected in the epithelium of ureteric buds and collecting ducts. MUC 6 transcripts were absent from adult kidney. This pattern of expression of MUC 6 in the developing kidney suggests a role in epithelial organogenesis. MUC 6 transcripts were also present at low levels in mid-trimester epididymal epithelium.

Original publication




Journal article


J Histochem Cytochem

Publication Date





817 - 822


Epididymis, Humans, Immunohistochemistry, In Situ Hybridization, Kidney, Male, Mucin-6, Mucins, Time Factors