Lampreys Devolved
July 29, 2024
...is not expressed in neural crest stem cells in lampreys. Losing this factor may have limited the ability of neural crest cells to form cell types found in jawed vertebrates...
Search Term: \'embryonic stem cells\'
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Archive: Plant Email, Aliens, Sex, Sandstone, More
July 12, 2024
...same way. Apparently there are “epigenetic” factors at work, influences other than the coded language of life. These include enzyme tags on genes that affect their expression. Embryonic stem cells...
Archive: Ethics, Rights, Bird Trees, Stalactites, Cells
July 5, 2024
...Remember Skinner’s constant: “that number which, when added to, subtracted from, multiplied or divided by the number you got, gives you the number you should have gotten.” Cells Use Triple...
Archive: Tuatara, Eyes, Cells, Self-Organization, Astrobiology
March 29, 2024
...described another “protease-chaperone machine” in cells that is widely conserved in living things. Named DegP, this molecular machine has two functions: if it cannot refold a badly-folded protein, it dismantles...
How DNA Is Packaged in Sperm Cells
November 28, 2023
...precursor. One article, titled On the Origin and Evolution of Sperm Cells[1] covers the failed attempts to discern the evolutionary origin of sperm, noting that Sperm cells have intrigued biologists...
Intricate Design Found in Sperm Cells
November 15, 2023
...oophorus cells and the zona pellucida of the oocyte. From Wikimedia Commons. This response to fluid conditions requires a sensory system to evaluate the liquid traits, which triggers variations in...
Archive Classic: 2003 News on Cells
October 7, 2023
...Self-Regulating Recycling System Found in the Cell 10/07/2003 Cells are not watertight sacks; they import and export things. But they are not leaky sacks either: everything coming and going is...
How Deer Grow Antlers
July 14, 2023
...A study found that the proliferation ability of Antler stem cells (AnSCs) is significantly stronger than that of human placenta mesenchymal stem cells in vitro. Furthermore, an animal experiment reported...
Cells Recycle Their Own Garbage
May 26, 2023
An efficient system involving multiple complex parts keeps a cell clean, new Darwin-free research reveals The closer one looks at a biological system, the more wondrous it becomes. That...
Out On a Limb: The Evolution of Olympians
May 24, 2023
...the creature supporting it: brain, nervous system, respiratory system, circulatory system, sensory system, and digestive system. And because of the reproductive system, all these systems can be encapsulated into a...
How Naked Mole-Rats Avoid Mutations
August 10, 2022
...as heart muscle cells, blood cells, or nerve cells. The two main stem-cell classes are embryonic stem cells and adult stem cells. Embryonic stem cells are totipotent, differentiating into all...
Thymus Cells Train in Boot Camp
July 12, 2022
...that looked to be skin cells and other cells. They seemed way out of place. These cells were called mimetic cells because they looked like they came from muscle, intestine,...
Waste Not, Want Not
June 30, 2022
...first to identify that stem cells in human urine have potential for tissue regenerative effects,” this article says. And these stem cells have an enzyme (telomerase) that makes them live...
Gut Bacteria Remember Pathogens
March 7, 2022
...pathogens that invade the mucosa. Using an intestinal infection model, scientists discovered that innate effector cells — group 3 innate lymphoid cells — act not only during the early stages...
Mammals With Inspiring Snouts
January 22, 2022
...looking to them for engineering ideas. The Elephant Elephant’s trunk may be one of most sensitive body parts of any animal (New Scientist). 400,000. That’s the number of nerve cells...