The spacing, timing, and shape matched patterns usually found in animals with left and right sides. The process raised a question. Why would a sea anemone use what looked like a tool common in far ...

A frog belonging to an endemic Western Ghats species has been discovered by researchers with a severe limb abnormality, indicating possible environmental stress in the region’s fragile ecosystem. The ...

Neurons placed inside engineered living bodies built from frog cells self-organize, become active, and reshape movement ...

Persistent endoplasmic reticulum (ER) stress impairs early embryonic development by inducing apoptosis through C/EBP homologous protein (CHOP). Toll-like receptor 4 (TLR4), traditionally recognized ...

Researchers at the MRC Laboratory of Medical Sciences (LMS) and Imperial College London have shown for the first time that, before they can start developing into egg and sperm cells, the embryonic ...

In mammals, the fusion of sperm and oocyte gives rise to a totipotent zygote, which undergoes a series of cleavage divisions and differentiation events. During this process, the embryo transitions ...

Russian opposition leader Alexei Navalny died in prison after being poisoned with a deadly toxin found in Ecuadorian dart frogs, the U.K. and other allies claimed Saturday. There is no possible ...

The toxin was found in the body of the Russian dissident Aleksei A. Navalny, who died in prison two years ago, five governments said, challenging Russia’s official account. By Anton Troianovski ...

Multicellularity is one of the most profound phenomena in biology, and relies on the ability of a single cell to reorganize itself into a complex organism. It underpins the diversity in the animal ...

In July 1932, young pathology resident Elizabeth M. Ramsey was performing a routine autopsy with a colleague at New Haven Hospital when she made an extraordinary discovery: an apparently normal human ...