Cell death in the ventral region of the neural retina during the early development of the chick embryo eye

The Anatomical Record
Gervasio Martín-PartidoJulio Navascués

Abstract

The present study deals with morphologic and quantitative changes that take place in the area of cell death in the ventral part of the presumptive retinal wall of the chick embryo. These changes were followed from the optic vesicle stage until the first optic fiber fascicles leave the neural retina. Our results show that both the volume occupied by the area of cell death and the density of its pyknotic fragments undergo considerable variation during the period between Hamburger and Hamilton's (1951) stages 12 to 20. In the optic vesicle stages, cell death in the ventral wall of the vesicle was observed in 50 to 75% of the embryos studied. During stages 14 and 15, this zone was seen in more than 90%. By the time invagination of the optic cup was complete, the ventral retinal zone of cell death had disappeared entirely in a large proportion of embryos; in all others, it shrank significantly both in volume and density of pyknotic fragments. In stage 19, when the first optic fiber fascicles begin to emerge from the retina, a dramatic increase occurs in the number of pyknotic fragments in the posterior pole of the retina. The appearance of dying cells, in a region shortly to be traversed by developing ganglion cell axons, supports t...Continue Reading

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Citations

Oct 12, 2005·Anatomy and Embryology·Lucía Rodríguez-GallardoGervasio Martín-Partido
Oct 14, 2010·The Cerebellum·Jakob JankowskiStephan Baader
Sep 28, 2000·Trends in Neurosciences·E J de la Rosa, F de Pablo
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Nov 7, 2015·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Claudia PinelliBiagio D'Aniello
Jun 8, 2011·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Ruth Bejarano-EscobarGervasio Martín-Partido
Jun 16, 2010·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Ruth Bejarano-EscobarJavier Francisco-Morcillo
Aug 19, 2014·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Javier Francisco-MorcilloGervasio Martín-Partido
Dec 25, 2004·Brain Research. Developmental Brain Research·Eva CandalIsabel Rodríguez-Moldes
Mar 2, 1999·Developmental Biology·Q TangD Goldowitz
Dec 8, 2004·Developmental Biology·Sergiu T LeuDennis O Clegg
Aug 30, 2005·International Review of Cytology·Nicole Duenker
Nov 19, 2003·The European Journal of Neuroscience·Raquel MayordomoFinn Hallböök
Jun 22, 2019·Developmental Dynamics : an Official Publication of the American Association of Anatomists·José Antonio de Mera-RodríguezJavier Francisco-Morcillo
Jul 12, 2017·Journal of Anatomy·Ruth Bejarano-EscobarJavier Francisco-Morcillo

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