A new discovery in southern China begs the understanding of evolutionary link between birds and dinosaurs. The fossilized remains of around 72-million-year-old dinosaur embryo, which is nicknamed Baby ...

BEIJING, Dec. 22 (Xinhua) -- A new study examining an embryo from a fossilized dinosaur egg has provided further evidence supporting the notion that modern birds evolved from dinosaurs. The embryo ...

Although embryonic stem cells (ESCs) have been successfully derived from mice and rats, efforts to establish chimeric and germline-competent ESC lines in species beyond rodents have been unsuccessful.

Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been widely debated, paleontological discoveries and developmental biology studies ...

Scientists have developed an experimental way to study how human embryos implant in a uterus, which may provide new insights into why miscarriages occur and how they can be prevented.