title: Structural changes in retinal pigmented epithelium of Rivulus marmoratus Poey embryos during development.
abstract: In Rivulus marmoratus development of retinal pigmented epithelium (RPE) parallels that of retinal photoreceptors. Although structurally functional by mid-incubation the full complex structure is not achieved even when the yolk-sac is absorbed (3-days post-hatched). Melanogenesis is evident at 0.2 incubation with premelanosomes present up to three days after hatching. The distribution of junctional complexes, basal membrane foldings and coated-pits throughout development is noted. Myeloid bodies, already present at mid-incubation, appear initially as single lenticular-shaped structures which later may form whorls, or coalesce around oil droplets, glycogen clusters or phagosomes thereby giving rise to myeloid patterns characteristic of a mature RPE. The functional significance of these changes is discussed.
authors: Département de Biologie, Université de Montréal, Québec, Canada.
authors: M A
authors: MA
authors: Ali
authors: M A
authors: MA
authors: Klyne
authors: E H
authors: EH
authors: Park
authors: S H
authors: SH
authors: Lee
mesh_terms: D000818:Animals; D004625:Embryo, Nonmammalian / Q000033:anatomy & histology; D005399:Fishes / Q000196:embryology* / Q000254:growth & development; D009940:Organoids / Q000648:ultrastructure; D010857:Pigment Epithelium of Eye / Q000196:embryology* / Q000254:growth & development / Q000648:ultrastructure