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Related Concept Videos

The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
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Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types –  adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as  epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as  heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
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The nervous system consists of complex motor neuron circuits, including upper motor neurons originating from the cerebral cortex and lower motor neurons starting in the spinal cord, coordinating both voluntary and involuntary movements. Among these, somatic motor neurons activate skeletal muscles and are classified into alpha, beta, and gamma types. Alpha neurons are vital for voluntary movement coordination, while gamma neurons adjust muscle spindle sensitivity, and the function of beta...
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Overview of Cell-Cell Junctions01:14

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Updated: May 23, 2026

The Subventricular Zone En-face: Wholemount Staining and Ependymal Flow
14:33

The Subventricular Zone En-face: Wholemount Staining and Ependymal Flow

Published on: May 6, 2010

The inner segment/outer segment junction: what have we learnt so far?

Ian Y Wong1, Lawrence P Iu, Hideki Koizumi

  • 1Eye Institute, University of Hong Kong, China. ianyhwong@gmail.com

Current Opinion in Ophthalmology
|March 28, 2012
PubMed
Summary
This summary is machine-generated.

Spectral domain optical coherence tomography reveals hyperreflective lines in the retina, crucial for visual function. Their integrity and recovery indicate treatment success and potential vision restoration in retinal diseases.

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Last Updated: May 23, 2026

The Subventricular Zone En-face: Wholemount Staining and Ependymal Flow
14:33

The Subventricular Zone En-face: Wholemount Staining and Ependymal Flow

Published on: May 6, 2010

Dissecting and Recording from The C. Elegans Neuromuscular Junction
15:19

Dissecting and Recording from The C. Elegans Neuromuscular Junction

Published on: February 25, 2009

Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Science

Background:

  • Advanced optical coherence tomography (OCT) enhances in-vivo retinal imaging resolution.
  • This enables detailed study of photoreceptor layer microstructures and visual function in diseases.

Purpose of the Study:

  • To review the significance of hyperreflective lines in the photoreceptor layer.
  • To explore their relationship with visual function and prognostic implications in retinal pathologies.

Main Methods:

  • Utilizing spectral domain optical coherence tomography (SD-OCT) for high-resolution retinal imaging.
  • Analyzing the origins and integrity of hyperreflective lines within the photoreceptor layer.

Main Results:

  • Four distinct hyperreflective lines identified in the photoreceptor layer: inner segment/outer segment junction, external limiting membrane, cone outer segment tips, and retinal pigment epithelium.
  • The integrity of these lines correlates with visual function across various retinopathies.
  • Restoration of interrupted lines observed after successful treatment.

Conclusions:

  • Hyperreflective lines identified via SD-OCT have significant clinical implications.
  • Their integrity is closely linked to visual function and may serve as a prognostic indicator.
  • Restoration of these lines suggests treatment response and potential for visual recovery.