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Wnt expression in proliferative, involutional, and residual zones was compared using TaqMan® PCR in eight samples. We normalized using the housekeeping gene GAPDH (glyceraldehyde-3-phosphate dehydrogenase). No differences in the β-catenin-accumulating involutional zone were seen, although Wnt5a showed slightly increased expression (p = 0.048). CNRQ = calibrated normalized relative quantity.
