blood vessels

This image took 3rd place at the 2022 Nikon Small World Photomicrography Competition.

A study offers a new explanation for how exercise strengthens bones and the immune system.

Scientists uncover the promise of mesenchymal stem cells (MSCs), also known as medicinal signaling cells, to modulate the immune system and regenerate tissue.

A pathologist describes his observations from examining the bodies of those who succumbed to the coronavirus.

The controversial oogonial stem cells eluded a team of Swedish researchers who mapped high-quality tissue samples of the human ovary, prompting more questions about the cells’ existence.  

Scientists have developed a tissue-clearing protocol that allows them to peer into entire, transparent human organs.

Researchers use a cutting-edge technique to map the blood vessels of brain tumors as patients are awake during surgery with the hope of reducing damage to adjacent tissues.

Researchers seek to untangle the biological mechanisms linking resident microbes to our hearts—and to harness them therapeutically.

Injection of a hydrogel that mechanically resembles a blood clot promotes the growth of new blood vessels in mice.

A human breast cancer cell divides as it moves through surrounding blood vessel cells in vitro.

The lab-made organoids are fully functional, the team reports, and could aid the study of vascular-related diseases such as diabetes.

Maps of diving cells before and after heart attacks in mice offer additional evidence against the existence of cardiac stem cells.

Researchers stumbled across the connection while searching for ways to reduce vision problems in people with achromatopsia.

After implantation, the tissue developed blood vessels and became integrated into neuronal networks in the animals’ brains.

High-tech imaging of the Jurassic creature’s humerus and ulna bones reveals it flapped its wings to evade predators.

Scientists take a close look at how cloven hoofed mammals use selective brain cooling to survive in the heat. 

This 10-centimeter-wide pig eye replica includes even the most intricate of blood vessels, some no wider than 30 micrometers.

A novel contrast agent made up of tiny iron oxide nanoparticles can label blood vessels, and highlight adverse events such cerebral ischemia, in dogs and monkeys. 

This stack of polarized light micrographs depicts a vibrant ensemble of tissues, hair follicles, and vessels within a slice of cat skin.