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Netrin-1 and its receptors play an essential role patterning the nervous system by guiding neurons and axons to their targets. To explore whether netrin-1 organizes nonneural tissues, we examined its role in mammary gland morphogenesis. Netrin-1 is expressed in prelumenal cells, and its receptor neogenin is expressed in a complementary pattern in adjacent(More)
Development of many organs, including the mammary gland, involves ductal morphogenesis. Mammary ducts are bi-layered tubular structures comprising an outer layer of cap/myoepithelial cells (MECs) and an inner layer of luminal epithelial cells (LECs). Slit2 is expressed by cells in both layers, with secreted SLIT2 broadly distributed throughout the(More)
To characterize the genetic properties of currently circulating measles viruses in Korea, the complete nucleotide sequences of hemagglutinin (H) protein and nucleoprotein (N) genes of Korean viruses were analyzed. The entire genes of H and N were directly amplified by RT-PCR from each clinical specimen and sequenced. Sequence analyses of H and N genes(More)
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