Development and Aging of the Vertebrate Visual System - download pdf or read online

By D.E. Lorke

ISBN-10: 3805582285

ISBN-13: 9783805582285

Targeted subject factor: Neuroembryology and getting older 2006/2007, Vol. four, No. 1-2 This specified subject factor of 'Neuroembryology and getting older' comprises contributions discussing the topic in-depth. 'Neuroembryology and getting older' is a well-respected, foreign peer-reviewed magazine in Neurology. targeted subject matters are integrated within the subscription.

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Sample text

23a, b). Differentiation in the guppy retina has extended from the fundus to the dorsal and upper one third of the ventral region. The mosaic reveals that along the contact Development and Aging in the Eye of Teleost Fish Neuroembryol Aging 2006–07;4:31–60 47 18 Fig. 18. Appearance of lumina in primordia of the eye and neural chord of the trout. a Transverse section of stage G (14 somites). b Transverse section of stage H (end of epiboly). d = diencephalon; cr = lens; e´ = ectoderm; e = epidermis; ms = mesoderm; n = nerve; p = periblast; vo = optical vesicle.

Karger AG, Basel © 2007 S. com/nba Introduction This publication presents an overview of earlier comprehensive analyses of the development of the fish eye [1–3] updated with relevant results of recent publications. The isolated retina of the teleost eye, the ‘forgotten part of the CNS’, is an excellent model for studying neural mechanisms because these fish, and their eyes, grow throughout life by stretching of the retina and by peripheral cell addition. In other words, the retinal growth zones (peripheral growth zones, PGZ) recapitulate retinal genesis.

27). In the early postembryonic phase, the eye bands move faster than at the end of the postembryonic phase. Development of the Zebrafish Eye and Retina In the neonate and 5- and 14-day-old guppy, the ellipsosome during light and dark adaptation reveals cristae with a dark patch. Outer Plexiform Layer, Inner Nuclear Layer and Inner Plexiform Layer in the Trout OPL. At stage C, cone terminals (pedicles), rod terminals (spherules) and growth cones of bipolar cells are observed. At stage E cone terminals exhibit three synaptic ribbons and rod terminals up to five dendritic invaginations.

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Development and Aging of the Vertebrate Visual System by D.E. Lorke

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