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Related Concept Videos

Embryonic Stem Cells00:58

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Updated: Jan 19, 2026

Pluripotency and Embryonic Stem Cells
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Blastocyst Microinjection with Embryonic Stem Cells.

Melissa A Larson1,2

  • 1Transgenic and Gene-Targeting Facility, University of Kansas Medical Center, Kansas City, KS, USA. mlarson@kumc.edu.

Methods in Molecular Biology (Clifton, N.J.)
|September 13, 2019
PubMed
Summary
This summary is machine-generated.

Generating knockout mice relies on injecting genetically modified embryonic stem (ES) cells into host blastocysts. This method enables targeted gene function deletion in mice for research purposes.

Keywords:
BlastocystChimeraEmbryonic stem cellsKnockoutMicroinjection

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Area of Science:

  • Developmental Biology
  • Genetics
  • Mouse Models

Background:

  • Embryonic stem (ES) cells are pluripotent and can differentiate into all tissues.
  • Genetic modification of ES cells allows for targeted gene function deletion.
  • Chimeric mice are essential for studying gene function, requiring ES cell integration.

Purpose of the Study:

  • To describe the procedure for generating knockout mice.
  • To detail the injection of ES cells into blastocysts.
  • To facilitate targeted gene deletion using ES cell technology.

Main Methods:

  • Utilizing embryonic stem (ES) cells for genetic modification.
  • Injecting modified ES cells into blastocyst-stage embryos.
  • Developing chimeric mice through embryo implantation and gestation.

Main Results:

  • Successful generation of knockout mice through ES cell injection.
  • Demonstration of targeted gene function deletion in resulting mice.
  • Establishment of a reliable method for creating genetically modified mouse models.

Conclusions:

  • ES cell injection into blastocysts is a key technique for creating knockout mice.
  • This method allows for precise investigation of gene function in vivo.
  • The described procedure is fundamental for advancing genetic research in mouse models.