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tag germ cells developmental biology evolution

One Protein to Rule Them All
Shelby Bradford, PhD | Feb 28, 2024 | 10+ min read
p53 is possibly the most important protein for maintaining cellular function. Losing it is synonymous with cancer.
a trio of infant mice, two brown mice on the ends and one white mouse in the middle
Mice Pass Epigenetic Tweaks to Pups
Katherine Irving | Feb 17, 2023 | 5 min read
An engineered methylation pattern persisted for four generations of mice, demonstrating transgenerational epigenetic inheritance can occur in mammals.
Why, Oh Y?
Jef Akst | Jan 1, 2015 | 9 min read
A toothpick and a bit of chance shaped David Page’s career, which he has dedicated to understanding the mammalian Y chromosome and fetal germ cell development.
Human Pluripotent Cells Pass Safety Test
Douglas Steinberg | Sep 1, 2002 | 7 min read
Image: ©2001 MacMillan Publishers Ltd.  PLURIPOTENT-CELL PIPELINE: To obtain embryonic germ cells, researchers culture primordial germ cells (PGCs) dissected from the genital ridge. If left in situ, a PGC develops into spermatozoa or ova after its imprints have been erased and reestablished. Embryonic stem cells come from the blastocyst's inner cell mass. (Reprinted with permission, Nature 414:122-8, 2001) Because the science is hard and the politics mean, progress in understanding
An illustration of green bacteria floating above neutral-colored intestinal villi
The Inside Guide: The Gut Microbiome’s Role in Host Evolution
Catherine Offord | Jul 1, 2021 | 10+ min read
Bacteria that live in the digestive tracts of animals may influence the adaptive trajectories of their hosts.
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.
Genetics Models Move Beyond Drosophila and the Humble Lab Mouse
Amber Dance | Sep 1, 2019 | 8 min read
Organisms with unusual genomes are helping scientists investigate gene regulation, evolution, and development.
From Simple To Complex
Jef Akst | Jan 1, 2011 | 10+ min read
The switch from single-celled organisms to ones made up of many cells has evolved independently more than two dozen times. What can this transition teach us about the origin of complex organisms such as animals and plants?
Stem Cell Discoveries Stir Debate
Douglas Steinberg | Nov 12, 2000 | 9 min read
Editor's Note: This is the first of two articles on questions raised by recent stem cell discoveries. The second article, focusing on various organs and the nervous system, will appear in the Nov. 27 issue of The Scientist. Researchers first isolated embryonic stem cells (ESCs) from mouse blastocysts almost 20 years ago, and a paper announcing the discovery of human ESCs emerged in 1998. Adult-derived stem cells (ASCs) have since become the rage in certain quarters of biology, with unexpected--
How to Track Cell Lineages As They Develop
Kelly Rae Chi | Dec 1, 2016 | 7 min read
Sequencing and gene-editing advances make tracing a cells journey throughout development easier than ever.

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