Xiaodan Linda Jin

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Emx1 is a mouse homologue of the Drosophila homeobox gene empty spiracles and its expression is restricted to the neurons in the developing and adult cerebral cortex and hippocampus. We reported previously the creation of a line of transgenic mice in which the cre gene was placed directly downstream of the putative Emx1 promoter using ES cell technology. We(More)
Emx1 is a mouse homologue of the Drosophila homeobox gene empty spiracles. Its expression is limited to the neurons in developing and adult cerebral cortex and hippocampus. Because of the highly restricted expression pattern of the Emx1 gene, it would be quite desirable to characterize the promoter of the Emx1 for directing foreign gene expression in the(More)
A novel multi-mode 5-fiber array assembly was developed, manufactured, characterized and then qualified for the Lunar Orbiter Laser Altimeter (LOLA). LOLA is a science data gathering instrument used for lunar topographical mapping located aboard the Lunar Reconnaissance Orbiter (LRO) mission. This LRO mission is scheduled for launch sometime in late 2008.(More)
NASA's Goddard Space Flight Center (GSFC) cooperatively with Sandia National Laboratories completed a series of tests on three separate configurations of multi-fiber ribbon cable and MTP connector assemblies. These tests simulate the aging process of components during launch and long-term space environmental exposure. The multi-fiber ribbon cable assembly(More)
The Emx1 gene is a mouse homologue of a Drosophila head gap gene, empty spiracles. Corpus callosum defects have been reported for mutant mice lacking the Emx1 gene, indicating a possible involvement of the Emx1 gene in the regulation of axon guidance during development. However, it has recently come to light that genetic background could influence the(More)
" Qualification " of fiber optic components holds a very different meaning than it did ten years ago. In the past, qualification meant extensive prolonged testing and screening that led to a programmatic method of reliability assurance. For space flight programs today, the combination of using higher performance commercial technology, with shorter(More)
  • H Guo, C Mao, +4 authors Y Li
  • 2000
Using the phage P1-derived Cre/loxP recombination system, we have created a line of cre-transgenic mice in which the Cre-mediated gene deletion is restricted to granule cells of cerebellum and dentate gyrus of hippocampus. Low levels of deletion were also present in pyramidal cells of hippocampal CA1 and CA3 fields. The Cre/loxP recombination occurred(More)
The photonics group in Code 562 at NASA Goddard Space Flight Center supports a variety of space flight programs at research, development, and testing of the photonic systems to support these missions much information has been gathered on practical implementations for space environments. Presented here are the highlights and lessons learned as a result of(More)
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