Embryoid bodies, at the top of the page, are a cluster of embryonic stem cells (ESCs) that differentiate portions into ectoderm (orange), mesoderm (dark blue), and endoderm (pink).
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Culturing pluripotent stem cells to replicate different stages of embryonic development allows researchers to more easily investigate this period.

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microscope image series showing synthetic embryo development

Mouse Embryo: No Sperm, Egg, or Uterus Required

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

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Opinion: The Reproductive Technology Advances No One Asked For

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Cancer Researcher Beatrice Mintz Dies at 100

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

Illustration showing how seagull chicks know when predators are lurking

Infographic: Animal Embryos Coopt Sound to Survive and Thrive

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Slideshow: How Animal Embryos Eavesdrop on the Outside World

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How to Grow a Mouse Embryo in a Dish

Illustration of two rats, one male and one female, that are surgically joined. The male has a uterus transplanted in, and both have embryos transplanted into their uteruses.

Study that Impregnated Male Rats Stirs Controversy

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High Profile Developmental Biologist Lewis Wolpert Dies at 91

Panel Lays Out Guidelines for CRISPR-Edited Human Embryos

Image of the Day: Brainless Frogs

A Woman of Firsts, Early 20th Century

China Sentences Gene-Editing Scientist to Three Years in Jail

Photos of the Year

Early Embryo Models Generated from Mouse Stem Cells

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First Human–Monkey Chimeras Developed in China

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Turtle Embryos May Have a Say in Deciding Their Sex

Scientists Push for a Moratorium on Human Germline Editing

Ultrasound of twins

Doctors Report World’s Second Case of “Semi-Identical” Twins

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Adélie penguin family

Penguins Are Among the World’s Slowest-Evolving Birds: Study

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Biomedical Informatician Atul Butte Dies at 55

Photo of John Calhoun crouches within his rodent utopia-turned-dystopia

Universe 25 Experiment

Image of futuristic technology such as artificial intelligence with a graphic of a robotic bird against a blue background.

An AI-Powered Scientist Proposes a Treatment for Blindness

Multimedia

Conceptual 3D illustration of mycoplasma colonies

Taking Control of Cellular Contamination with PCR Testing

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Digital microscopy image of cells in culture

Electronic Records in Cell Culture Management

Image of small blue creatures called Nergals. Some have hearts above their heads, which signify friendship. There is one Nergal who is sneezing and losing health, which is denoted by minus one signs floating around it.
June 2025, Issue 1

Nergal Networks: Where Friendship Meets Infection

A citizen science game explores how social choices and networks can influence how an illness moves through a population.

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Unraveling Complex Biology with Advanced Multiomics Technology

Unraveling Complex Biology with Five-Dimensional Multiomics

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Resurrecting Plant Defense Mechanisms to Avoid Crop Pathogens

Resurrecting Plant Defense Mechanisms to Avoid Crop Pathogens

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Seeing and Sorting with Confidence

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Streamlining Microbial Quality Control Testing

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Agilent Unveils the Next Generation in LC-Mass Detection: The InfinityLab Pro iQ Series

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Pioneering Cancer Plasticity Atlas will help Predict Response to Cancer Therapies

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How Alderley Analytical are Delivering eXtreme Robustness in Bioanalysis