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Related Concept Videos

The Retina01:32

The Retina

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The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
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Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
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Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
All animals have varying degrees of...
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Whole Body Regeneration01:33

Whole Body Regeneration

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Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
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Liver Regeneration01:24

Liver Regeneration

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The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
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The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
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Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

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Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
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The two main cell...
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Related Experiment Video

Updated: Jan 23, 2026

Methylnitrosourea MNU-induced Retinal Degeneration and Regeneration in the Zebrafish: Histological and Functional Characteristics
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Methylnitrosourea MNU-induced Retinal Degeneration and Regeneration in the Zebrafish: Histological and Functional Characteristics

Published on: October 20, 2014

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Retina regeneration in zebrafish.

Jin Wan1, Daniel Goldman1

  • 1Molecular and Behavioral Neuroscience Institute and Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, United States.

Current Opinion in Genetics & Development
|June 10, 2016
PubMed
Summary

Zebrafish can regenerate retinas using Müller glia, which reprogram to form progenitor cells. This research may unlock strategies for mammalian retina regeneration.

Area of Science:

  • Comparative biology
  • Neuroscience
  • Regenerative medicine

Background:

  • Mammals cannot regenerate damaged retinas, unlike zebrafish.
  • Zebrafish possess a remarkable capacity for retinal regeneration following injury.

Purpose of the Study:

  • To review recent advances in zebrafish retina regeneration research.
  • To explore future directions for stimulating Müller glia reprogramming in mammals.

Main Methods:

  • Review of existing literature on zebrafish retina regeneration.
  • Analysis of Müller glia reprogramming mechanisms.

Main Results:

  • Müller glia are key to zebrafish retinal regeneration.
  • These glia reprogram to multipotent progenitors, regenerating all retinal neuron types.

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Assessment of Vascular Regeneration in the CNS Using the Mouse Retina
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Assessment of Vascular Regeneration in the CNS Using the Mouse Retina

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An Assay for Lateral Line Regeneration in Adult Zebrafish
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An Assay for Lateral Line Regeneration in Adult Zebrafish

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Related Experiment Videos

Last Updated: Jan 23, 2026

Methylnitrosourea MNU-induced Retinal Degeneration and Regeneration in the Zebrafish: Histological and Functional Characteristics
08:53

Methylnitrosourea MNU-induced Retinal Degeneration and Regeneration in the Zebrafish: Histological and Functional Characteristics

Published on: October 20, 2014

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Assessment of Vascular Regeneration in the CNS Using the Mouse Retina
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Assessment of Vascular Regeneration in the CNS Using the Mouse Retina

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An Assay for Lateral Line Regeneration in Adult Zebrafish
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An Assay for Lateral Line Regeneration in Adult Zebrafish

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Conclusions:

  • Zebrafish regeneration mechanisms offer insights into potential therapeutic strategies for mammalian retinal repair.
  • Further research may lead to novel treatments for vision loss.