For most of us, chimeras are a common aspect of mythology and the most tragic parts of our favorite anime, but for the science community, they hold both incredible research value and ethical concerns. This is why the US National Institutes of Health (NIH) proposed new guidelines Thursday in dealing with animal-human…
If humans are to live anywhere that isn’t Earth, we’ll need to be able to reproduce elsewhere in space. Now, a series of experiments performed by Chinese researchers show that mammalian embryos can “develop completely” in orbit.
Just like a supermarket avocado, the squishiness of fertilized human eggs could hint at how healthy and viable their embryos are—which would be a huge benefit for the millions of in-vitro fertilization babies now being born worldwide.
When in vitro fertilization was developed in the 1970s, critics of the technique imagined a world a la Aldous Huxley, filled with assembly-line designer babies. It didn’t turn out like that. Instead, the procedure simply gave infertile couples another route to start a family. But it also created a problem that critics …
These time lapses are captured by a computer that automatically tracks embryo growth from the moment the sperm enters the egg during in vitro fertilization. It selects the best candidates for implantation in mothers, using special algorithms that look for some key markers during the cell division process.
Researchers have discovered 500 million-year-old fossilized embryos. Dating back to the Cambrian Explosion, they emerged during a time when most phyla of marine invertebrates first appeared. The discovery is offering a rare opportunity for scientists to study the origin and development of our planet's oldest animals.
Forget about the Montauk monster. This extraordinary photo—taken by Dorit Hockman, from the University of Cambridge's
Department of Physiology, Development and Neuroscience—shows three embryos of the species Molossus rufus, known as the black mastiff bat.
The black mastiff bat (Molossus rufus) grows to be about 30 grams, but these little guys are just embryos, their bodies hairless, their eyes closed, and playing inadvertent tribute to two of the three wise monkeys.