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Microscopy image of a cricket embryo, illuminated in green, pinched near one end, with one side full of bright green dots representing cell nuclei
How Wandering Nuclei Shape Developing Embryos
As cricket blastoderms form, cell nuclei are pulled into an egg’s remaining empty space to form the new cell layers that will shape the developing animal.
How Wandering Nuclei Shape Developing Embryos
How Wandering Nuclei Shape Developing Embryos

As cricket blastoderms form, cell nuclei are pulled into an egg’s remaining empty space to form the new cell layers that will shape the developing animal.

As cricket blastoderms form, cell nuclei are pulled into an egg’s remaining empty space to form the new cell layers that will shape the developing animal.

embryo, developmental biology

Photo of older woman dressed in blue smiling and looking at the camera
Cancer Researcher Beatrice Mintz Dies at 100
Natalia Mesa, PhD | Jan 20, 2022 | 2 min read
Mintz’s experiments over her six-decade career were foundational to cancer and genetics research.
Multiple purple and pink renditions of stem cells appear as spherical clusters enveloped in translucent bubbles
Mammalian Embryos Might Not Need Primitive Streaks After All
Dan Robitzski | Dec 2, 2021 | 7 min read
The primitive streak, a structure that emerges during mammalian and avian gastrulation, might be a byproduct rather than a landmark of the embryonic development process.
istock
How to Grow a Mouse Embryo in a Dish
Roni Dengler, PhD | Aug 3, 2021 | 3 min read
Researchers are taking the concept of three-dimensional cell culture beyond single organoids to develop embryos from cells.
lewis wolpert obituary developmental biology embryo 14 day rule
High Profile Developmental Biologist Lewis Wolpert Dies at 91
Shawna Williams | Feb 16, 2021 | 2 min read
Wolpert, who conducted research at University College London, was known for his work on morphogenesis and pattern development in embryos and for his multiple books and broadcast appearances.
Image of the Day: Brainless Frogs
Amy Schleunes | Feb 18, 2020 | 1 min read
Without a brain, the frog embryo immune system doesn’t receive the signals it needs to mobilize macrophages and fight infections.
A Woman of Firsts, Early 20th Century
Emily Makowski | Jan 13, 2020 | 3 min read
Florence Sabin was known for her pioneering research and efforts to support women in science.
Early Embryo Models Generated from Mouse Stem Cells
Abby Olena, PhD | Oct 17, 2019 | 4 min read
Extended pluripotent stem cells from mice can self-organize to form blastocyst-like structures called blastoids that enable a closer look at early mammalian development.
chinese pond turtle embryo temperature-dependent sex climate change
Turtle Embryos May Have a Say in Deciding Their Sex
Katarina Zimmer | Aug 1, 2019 | 4 min read
In a species of freshwater turtle, embryos can move toward warmer or cooler environments within the egg and thus help choose their sexual destiny, but not all experts are convinced.
Ultrasound of twins
Doctors Report World’s Second Case of “Semi-Identical” Twins
Catherine Offord | Feb 28, 2019 | 2 min read
The extremely rare event, thought to be caused by two sperm cells fertilizing the same egg simultaneously, was last reported in 2007.
Image of the Day: Cellular Tracks
Carolyn Wilke | Jan 21, 2019 | 1 min read
To study the fate of stem cells in developing chick embryos, researchers trace their steps over time.
Image of the Day: Embryo in Blue
Carolyn Wilke | Jan 7, 2019 | 1 min read
A bright blue stain highlights the sensory nerves of a developing mouse embryo.
Discovery’s Crest: A Profile of Marianne Bronner
Anna Azvolinsky | Dec 1, 2018 | 8 min read
Studying how neural crest cells journey through the embryo, this Caltech developmental biologist has revealed how they form major cell types, including peripheral neurons, bone, and smooth muscle.
First Mouse Embryos Made from Two Fathers
Abby Olena, PhD | Oct 11, 2018 | 3 min read
The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.
In Their Earliest Days, Embryos Record Their Environments
Kerry Grens | Oct 1, 2018 | 4 min read
Methylation patterns at so-called metastable epialleles in the genome stamp a memory into each of our cells.
CRISPR Can Track Cellular History of a Mammalian Embryo
Sukanya Charuchandra | Aug 10, 2018 | 2 min read
Researchers used the genome-editing technology to analyze the development of mouse tissues.
These Molecules Zipper Embryos Closed
Ashley Yeager | Aug 1, 2018 | 2 min read
Actin rings seal off the ball of cells, aiding in implantation in the uterus. But faults in the process could explain why some pregnancies fail.
Infographic: Embryonic Zippering
Ashley Yeager | Jul 31, 2018 | 1 min read
How actin seals embryos early in development
Artificial Mouse Embryo Made in a Laboratory
Sukanya Charuchandra | Jul 25, 2018 | 1 min read
The embryo, grown in a dish from several types of stem cells, went through gastrulation, a significant stage in development.
Animalsā€™ Embryonic Organizer Now Discovered in Human Cells
Jim Daley | May 23, 2018 | 4 min read
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.
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