Fluorescent microscopy image of an embryo model representing four tissue layers of this developmental stage. Cyan-labeled cells are clustered at the top of an ovoid structure, underneath them are yellow-labeled cells and under them red-labeled cells, and surrounding all three layers are white labeled cells.
| 2 min read
Jacob Hanna developed a method for replicating embryogenesis outside of the uterus to understand the underlying mechanisms.

embryology

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

lewis wolpert obituary developmental biology embryo 14 day rule

High Profile Developmental Biologist Lewis Wolpert Dies at 91

These Molecules Zipper Embryos Closed

Infographic: Embryonic Zippering

Animals’ Embryonic Organizer Now Discovered in Human Cells

Passing the Torch

Image of the Day: Brand New Pyjamas

Image of the Day: Embryonic Ripples

Embryonic Evolution Through Ernst Haeckel’s Eyes

Famed Mammalian Embryologist Dies

Study: IVF Media Affects Treatment Outcomes

Notable Science Quotes

Organelle Architecture

Seeing Clearly

Go Forth, Cells

Contributors

Long and Rocky Roads

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Universe 25 Experiment

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Immune Amnesia: How the Texas Measles Outbreak Could Promote the Spread of Other Infectious Diseases

An artistic rendition of polycystic ovarian syndrome, showing ovarian cysts represented by paper balls.

An Anti-Malarial Drug Could Ameliorate PCOS Symptoms

3D illustration of a blue virus (center) surrounded by magenta antibodies. More blue viruses are in the background.

Viruses That Mimic Human Proteins May Be More Common than Previously Thought  

Multimedia

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Olink® Reveal: Accessible NGS-based proteomics for every lab

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A researcher’s gloved hand holding a glass weighing boat with a loose powder sample on it

Minimizing to Maximize Measurement Accuracy

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A greyscale image of cells dividing.
March 2025, Issue 1

How Do Embryos Know How Fast to Develop

In mammals, intracellular clocks begin to tick within days of fertilization.

View this Issue
Discover the history, mechanics, and potential of PCR.

Become a PCR Pro

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3D rendered cross section of influenza viruses, showing surface proteins on the outside and single stranded RNA inside the virus

Genetic Insights Break Infectious Pathogen Barriers

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A photo of sample storage boxes in an ultra-low temperature freezer.

Navigating Cold Storage Solutions

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The Immunology of the Brain

The Immunology of the Brain

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Olink® Reveal: Accessible NGS-based proteomics for every lab

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Zymo Research Launches the Quick-16S™ Full-Length Library Prep Kit