Most cell signals are chemical in nature. For example, prokaryotic organisms have sensors that detect nutrients and help them navigate toward food sources. In multicellular organisms, growth ...

Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike ...

Mitochondria turn the food we eat into the energy our cells can use. But when stress hijacks the process they use to maintain ...

A team of scientists has answered a long-standing question in cell biology, uncovering how the cell's main energy currency, ATP, is transported into the endoplasmic reticulum (ER). Disrupted energy ...

Researchers at the Francis Crick Institute have shown that gonadotrophs, cells in the pituitary gland with a key role in ...

Cells are the smallest units of life. But even within the same tissue or organ, they are not all identical. New variations arise continuously during cell proliferation. While genetic mutations alter ...

Living in a murky lake around Mexico City, surrounded by aggressive and cannibalistic neighbors, the axolotl lives at ...

And it's tempting to seize upon the cells as a simple explanation for the basis of our species' complex social nature. But Allman knows that's a stretch. His theory has its skeptics ...

Take the evolution of sex, for instance. To make the move from asexual to sexual reproduction, nature took a system by which parent cells reproduced simply by dividing (asexual reproduction ...