“Invisible Lunatic”
نویسندگان
چکیده
منابع مشابه
Vertebrate Segmentation: Lunatic Transcriptional Regulation
Vertebrate segmentation relies on a molecular oscillator, the segmentation clock, which controls the periodic expression of genes such as lunatic fringe in the presomitic mesoderm. Oscillations of lunatic fringe transcripts have now been shown to be controlled at the transcriptional level by clock elements in the lunatic fringe promoter.
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Cell interactions involving Notch signaling are required for the demarcation of tissue boundaries in both invertebrate and vertebrate development. Members of the Fringe gene family encode beta-1,3 N-acetyl-glucosaminyltransferases that function to refine the spatial localization of Notch-receptor signaling to tissue boundaries. In this paper we describe the isolation and characterization of the...
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متن کاملInvisible Obstacles * †
It is proved that one can choose a control function on an arbitrarilly small open subset of the boundary of an obstacle so that the total radiation from this obstacle for a fixed direction of the incident plane wave and for a fixed wave number will be as small as one wishes. The obstacle is called “invisible” in this case.
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ژورنال
عنوان ژورنال: Nature
سال: 1963
ISSN: 0028-0836,1476-4687
DOI: 10.1038/200392a0