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Detailed in situ analyses reveal overlapping expression of gsc and Xbra in the early Spemann's organizer. Coexpression is lost during gastrulation suggesting an interaction between these genes. Ectopic expression of gsc ventrally suppresses endogenous Xbra expression and transcription from Xbra promoter reporter gene constructs. Suppression is mediated, at(More)
Apoptosis after the loss of cell anchorage--"anoikis"--plays an important role in the life cycle of adherent cells. Furthermore, loss of anchorage dependency is believed to be a critical step in metastatic transformation. The aim of this study was to further characterize the sequence of intracellular events during anoikis in a nontransformed population of(More)
Autoantibodies directed against the skeletal muscle acetylcholine receptor (AChR) play a critical role in the pathogenesis of the autoimmune disease, myasthenia gravis (MG). The pathogenic importance of anti-AChR antibodies is substantiated clinically by the often dramatic clinical improvement that follows removal of circulating antibodies utilizing(More)
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