Rebecca L Bernardos

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Neuronal progenitors in the mammalian brain derive from radial glia or specialized astrocytes. In developing neural retina, radial glia-like Müller cells are generated late in neurogenesis and are not considered to be neuronal progenitors, but they do proliferate after injury and can express neuronal markers, suggesting a latent neurogenic capacity. To(More)
BACKGROUND The persistence in adult teleost fish of retinal stem cells that exhibit all of the features of true 'adult stem cells'--self-renewal, multipotency, and the capacity to respond to injury by mitotic activation with the ability to regenerate differentiated tissues--has been known for several decades. However, the specialized cellular and molecular(More)
Glial cells are the most abundant cell type in our brains, yet we understand very little about their development and function. An accumulating body of work over the last decade has revealed that glia are critical regulators of nervous system development, function, and health. Based on morphological and molecular criteria, glia in Drosophila melanogaster are(More)
We have generated transgenic zebrafish that express green fluorescent protein (GFP) in glial cells driven by the zebrafish glial fibrillary acidic protein (GFAP) regulatory elements. Transgenic lines Tg(gfap:GFP) were generated from three founders; the results presented here are from the mi2001 line. GFP expression was first visible in the living embryo at(More)
Notch-Delta signaling has been implicated in several alternative modes of function in the vertebrate retina. To further investigate these functions, we examined retinas from zebrafish embryos in which bidirectional Notch-Delta signaling was inactivated either by the mind bomb (mib) mutation, which disrupts E3 ubiquitin ligase activity, or by treatment with(More)
iii Dedication This work is dedicated to my family: Paul Avery (father), Jill Avery (mother), Ryan Avery (brother), Bob Avery (grandfather), and Ruth Avery (grandmother) for all their support throughout my education and allowing me to believe I can do whatever I set my mind to. iv Acknowledgements First and foremost, I would like to thank my thesis advisor,(More)
iii Acknowledgements I would like to thank my thesis advisor Marc Freeman for all of his guidance and support and always having a box of tissues in his office. I am eternally grateful that he always believed in me and gave me the opportunity to perform my graduate work in his lab. I wish everyone had a mentor that was as optimistic and excited about science(More)
iii Acknowledgements I would like to thank my thesis advisor Marc Freeman for all of his guidance and support and always having a box of tissues in his office. I am eternally grateful that he always believed in me and gave me the opportunity to perform my graduate work in his lab. I wish everyone had a mentor that was as optimistic and excited about science(More)
iii Dedication This work is dedicated to my family: Paul Avery (father), Jill Avery (mother), Ryan Avery (brother), Bob Avery (grandfather), and Ruth Avery (grandmother) for all their support throughout my education and allowing me to believe I can do whatever I set my mind to. iv Acknowledgements First and foremost, I would like to thank my thesis advisor,(More)
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