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Hiroyuki Miyoshi, Rieko Ajima, Christine T Luo, Terry P Yamaguchi, Thaddeus S Stappenbeck
Reestablishing homeostasis after tissue damage depends on the proper organization of stem cells and their progeny, though the repair mechanisms are unclear. The mammalian intestinal epithelium is well suited to approach this problem, as it is composed of well-delineated units called crypts of Lieberk├╝hn. We found that Wnt5a, a noncanonical Wnt ligand, was required for crypt regeneration after injury in mice. Unlike controls, Wnt5a-deficient mice maintained an expanded population of proliferative epithelial cells in the wound...
October 5, 2012: Science
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