The body plan of an organism, crafted over millennia of evolutionary trial and error, is so exquisitely fine-tuned that even a subtle deviation can be detrimental to individual survival and ...

Researchers at Karolinska Institutet have developed a method that shows how the nervous system and sensory organs are formed in an embryo. By labeling stem cells with a genetic 'barcode', they have ...

Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...