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image: Embryo Watch

Embryo Watch

By | May 5, 2016

A new culture system allows researchers to track the development of human embryos in vitro for nearly two weeks. 

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image: Human Embryos Genetically Edited Again

Human Embryos Genetically Edited Again

By | April 11, 2016

For the second time, researchers use CRISPR to modify the genomes of nonviable embryos.


image: NIH Opposes Editing Human Embryos

NIH Opposes Editing Human Embryos

By | April 30, 2015

Following the publication of a study in which scientists used CRISPR to edit nonviable human embryos, the National Institutes of Health states it will not fund such research.


image: Erasing Mitochondrial Mutations

Erasing Mitochondrial Mutations

By | April 23, 2015

Researchers develop a method to selectively remove mutated mitochondrial DNA from the murine germline and single-celled mouse embryos.


image: Researchers Edit Early Embryos

Researchers Edit Early Embryos

By | April 23, 2015

Investigators in China observed extensive off-target effects when applying CRISPR-mediated gene editing in human zygotes.

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image: Call for Germline Editing Moratorium

Call for Germline Editing Moratorium

By | March 13, 2015

In response to speculation that groups have edited the DNA of human embryos, researchers request that gene editing of human reproductive cells be halted.


image: Stems Cells Ushered into Embryonic Development

Stems Cells Ushered into Embryonic Development

By | November 7, 2014

The right mix of mouse embryonic stem cells in a dish will start forming early embryonic patterns, according to two studies.


image: Epigenetics of Embryonic Stem Cells

Epigenetics of Embryonic Stem Cells

By | May 14, 2013

Researchers track DNA modifications and gene expression in stem cells as they differentiate.

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image: Fellow Travelers

Fellow Travelers

By | February 1, 2013

Collective cell migration relies on a directional signal that comes from the moving cluster, rather than from external cues.

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image: Preserving Endangered Gametes

Preserving Endangered Gametes

By | March 1, 2012

Pierre Comizzoli, a reproductive physiologist at the Smithsonian Conservation Biology Institute, chats about his efforts to rescue endangered species from extinction using in vitro fertilization as well as novel gamete preservation techniques.


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