video: This shows a series of confocal slices through the tip of a wild-type fruiting body stained with phalloidin. The sections are separated by 1 μm. Tip epithelial cells are packed in an organized ...

Biologists are quietly rewriting what it means to be alive, and the human body has become one of their strangest frontiers.

Up until recently, habituation -- a simple form of learning -- was deemed the exclusive domain of complex organisms with brains and nervous systems, such as worms, insects, birds, and mammals. But a ...

All life is made of cells. But to build a complex, multicelled organism from those cells almost always requires them to come in more than one type. This means that as the number of cells in a growing ...

Efforts to use regenerative medicine—which seeks to address ailments as diverse as birth defects, traumatic injury, aging, degenerative disease, and the disorganized growth of cancer—would be greatly ...

How do living organisms that lack a brain or nerve cells make decisions? In a new study published in May 2021 in the Proceedings of the National Academy of Sciences of the United States of America ...

The planarian is nobody's idea of a genius. A flatworm shaped like a comma, it can be found wriggling through the muck of lakes and ponds worldwide. Its pin-size head has a microscopic structure that ...

Researchers find that oxygenation of Earth's surface is key to the evolution of large, complex multicellular organisms. If cells can access oxygen, they get a big metabolic benefit. However, when ...

This shows a series of confocal slices through the tip of a wild-type fruiting body stained with phalloidin. The sections are separated by 1 μm. Tip epithelial cells are packed in an organized manner ...