First Mouse Embryos Made from Two FathersFirst Mouse Embryos Made from Two FathersFirst Mouse Embryos Made from Two Fathers
First Mouse Embryos Made from Two Fathers
The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.
First Mouse Embryos Made from Two Fathers
First Mouse Embryos Made from Two Fathers

The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.

The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.

embryonic development
Image of the Day: The Birth of a Nervous System
Image of the Day: The Birth of a Nervous System
Jef Akst | Oct 2, 2018
The winner of the 2018 Nikon Small World in Motion video competition shows the development of sensory neurons in a zebrafish embryo.
In Their Earliest Days, Embryos Record Their Environments
In Their Earliest Days, Embryos Record Their Environments
Kerry Grens | Oct 1, 2018
Methylation patterns at so-called metastable epialleles in the genome stamp a memory into each of our cells.
Animals’ Embryonic Organizer Now Discovered in Human Cells
Animals’ Embryonic Organizer Now Discovered in Human Cells
Jim Daley | May 23, 2018
The finding confirms that a cluster of cells that directs the fate of other cells in the developing embryo is evolutionarily conserved across the animal kingdom.
New Techniques Detail Embryos’ First Hours and Days
New Techniques Detail Embryos’ First Hours and Days
Jef Akst | Dec 1, 2017
New technologies reveal the dynamic changes in mouse and human embryos during the first week after fertilization.
Infographic: How Embryos Take Control of Their Own Development
Infographic: How Embryos Take Control of Their Own Development
Jef Akst | Nov 30, 2017
The switch from maternal factors involves dynamic reprogramming of the zygotic genome.
How a Sleep-Associated Hormone Affects Murine Tooth Development
How a Sleep-Associated Hormone Affects Murine Tooth Development
Mallory Locklear | Aug 22, 2016
Disrupting the light/dark cycles of pregnant mice, researchers observe detrimental effects in the mouths of the animals’ pups.
Research at Micro- and Nanoscales
Research at Micro- and Nanoscales
Mary Beth Aberlin | Jun 1, 2016
From whole cells to genes, closer examination continues to surprise.
 
Mice Develop with Human Stem Cells
Mice Develop with Human Stem Cells
Karen Zusi | Dec 21, 2015
Human embryonic stem cells and induced pluripotent stem cells participated normally in early mouse embryo development in a recent study.
Leaving an Imprint
Leaving an Imprint
Anna Azvolinsky | Aug 1, 2015
Among the first to discover epigenetic reprogramming during mammalian development, Wolf Reik has been studying the dynamics of the epigenome for 30 years.