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The Hedgehog intercellular signaling pathway regulates cell proliferation and differentiation. This pathway has been implicated to play a role in the pathogenesis of cancer and in embryonic blood vessel development. In the current study, Hedgehog signaling in tumor related vasculature and microenvironment was examined using human umbilical vein endothelial cells and B16F0 (murine melanoma) tumors...
The hair follicle is a source of epithelial stem cells and site of origin for several types of skin tumors. Although it is clear that follicles arise by way of a series of inductive tissue interactions, identification of the signaling molecules driving this process remains a major challenge in skin biology. In this study we report an obligatory role for the secreted morphogen Sonic hedgehog (Shh)...
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