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Updated: May 12, 2026

Zebrafish Larvae as a Model to Evaluate Potential Radiosensitizers or Protectors
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Cell proliferation patterns in early zebrafish development.

Mario A Mendieta-Serrano1, Denhi Schnabel, Hilda Lomelí

  • 1Departamento de Fisiología Molecular y Genética del Desarrollo, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Colonia Chamilpa, Cuernavaca, Morelos, C.P., 62210, México.

Anatomical Record (Hoboken, N.J. : 2007)
|April 5, 2013
PubMed
Summary
This summary is machine-generated.

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Early zebrafish development shows less synchronized cell division than expected, with mitosis becoming asynchronous before the midblastula transition. This suggests synchrony isn't essential for proper embryonic development in zebrafish.

Area of Science:

  • Developmental Biology
  • Cell Biology
  • Genetics

Background:

  • Cell proliferation is crucial for animal development.
  • Detailed spatial and temporal proliferation patterns are often missing for model organisms.
  • Zebrafish embryos offer advantages for such analyses due to transparency and size.

Purpose of the Study:

  • To analyze spatial and temporal patterns of cell proliferation in zebrafish embryos during the first day of development.
  • To investigate the synchrony of cell division in early zebrafish embryos.

Main Methods:

  • Indirect immunofluorescence using phosphorylated histone H3 as a mitotic marker.
  • Microscopy analysis of zebrafish embryos at various early developmental stages.

Main Results:

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  • Mitosis metasynchrony can initiate as early as the 2- to 4-cell stage in zebrafish embryos.
  • Mitotic synchrony is lost prior to the midblastula transition (MBT).
  • A novel pattern of mitotic clusters was observed, coinciding with pseudo-waves of mitosis before the MBT.

Conclusions:

  • Early zebrafish development exhibits less synchrony than previously assumed.
  • Synchronized cell division is not a prerequisite for normal zebrafish embryonic development.