Cilia in the fetal and neonatal canine retina

Herbert E. Whiteley, Stuart Young

Research output: Contribution to journalArticlepeer-review


Cilia in the canine retina were examined at 40, 46 and 50 days of gestation and at birth by scanning electron microscopy, transmission electron microscopy, and by the freeze-fracture technique. Cilia were similar in all age groups examined. Scanning electron micrographs showed them to be smooth-surfaced conical to tubular extensions arising from putative photoreceptor inner segments. Cilia when frecze-fractured contained variable numbers ot circumferential rows of 10 nm P-face particles: these constitute the ciliary necklace. Transmission electron micrographs showed the ciliary membrane to contain electron-dense beads which corresponded to the ciliary necklace seen in freeze-fracture replicas. The ciliary necklace identified in the developing canine retina was similar to those found in other types of motile and sensory cilia.

Original languageEnglish (US)
Pages (from-to)335-340
Number of pages6
JournalTissue and Cell
Issue number3
StatePublished - 1985
Externally publishedYes


  • Freeze-fracture
  • cilia
  • ciliary necklace
  • retina
  • scanning electron microscopy

ASJC Scopus subject areas

  • Developmental Biology
  • Cell Biology


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