Feathers, essential for thermoregulation, flight, and communication in birds, originate from simple appendages known as proto-feathers, which were present in certain dinosaurs.By studying embryonic ...

Inhibiting the sonic hedgehog (Shh) pathway strongly perturbs feather development in chickens by restricting feather bud outgrowth, invagination and ...

Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been widely debated ...

Scientists uncovered a key genetic pathway in the origin of feathers, but they found that evolution is stubborn in turning ...

Human biology is not black and white. Although newborns are typically categorized as male or female at birth based on visible ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how ...

Scientists have found a way to study early embryonic development without real embryos. Using CRISPR, they programmed stem cells to self-organize into structures mimicking early embryos. The cells show ...

A study reveals how the Wingless signalling pathway shapes the embryonic intestine of the Drosophila fly, activating a mechanism involved in calcium transport. The finding redefines the role of ...

Abortion opponents have long used graphic photos of embryonic and fetal tissue to try to persuade people outside clinics not ...

In a study of early embryonic development in primates, an international research team under the leadership of Berthold ...

During embryonic development, the intestine of the Drosophila fly divides into distinct chambers thanks to the formation of ...

From his lab at the University of Houston College of Pharmacy Drug Discovery Institute, Mingfu Wu, associate professor, is offering new hope for treating heart disease by sharing his insights into the ...