physiology

This image took 2nd place at the 2022 Nikon Small World Photomicrography Competition.

Pups born to mice whose mothers had been fed a high-fat diet showed social deficits, a study shows. 

Benacerraf pioneered the use of ultrasound to diagnose fetal syndromes.

Mice that received the stem cell–derived treatment were less frail compared with controls, a study reports.

A study adds to evidence linking gut bacteria to liver conditions in people who don’t drink excessive amounts of alcohol. 

Tiny hairlike structures on pancreatic cells have long been considered static sensors. Now, researchers say they move and help regulate insulin secretion.

Specific neurons in the brainstem control sickness behaviors not directly caused by a pathogen, such as tiredness and lack of appetite, a mouse study finds.

As humanity peers ever further into the cosmos, the similarities and differences between our universe and our inner workings emerge.

Scientific publishers get involved in a scandal at Temple University that has so far produced one retraction for image manipulation, a university-led investigation, and a lawsuit by one of the researchers involved.

A puzzle for millennia, the movement of blood through the body was solved by an English physician in the 17th century, paving the way for modern medical technologies.

For the first time, a team visualizes sensory nerves projecting into adipose tissue in mice and finds these neuronal cells may counteract the local effects of the sympathetic nervous system.

A Stone Age individual’s left leg healed after being amputated just above the foot, allowing them to survive for six to nine years after the procedure was performed, researchers say.

3D modeling of 7 million-year-old hominin bones hints at bipedality occurring earlier than previously thought.

Milk fortifiers of human origin show no evident advantage in the development of the gut microbiota of premature infants over fortifiers derived from cows, while the intake of the mother’s own milk does, two studies suggest.

The simple act of chewing gum can raise the body’s metabolic rate by as much as 15 percent, a study finds.

Performing complex cognitive tasks leads to glutamate accumulating in a key region of the brain, a study finds, which could explain why mental labor is so exhausting.

A paper argues that the evolutionary loss of a thin vocal membrane in the larynx may have facilitated oral communication.  

The cells’ mitochondria skip a key metabolic reaction that takes place in other cells in the body, a study finds.

A study’s authors say their oxygenating cocktail may lead to technologies that preserve organs in deceased people for longer periods for transplantation.

Fasting, eating only at certain times of day, and restricting overall calorie intake can collectively contribute to lifespan extensions in animals. Could the same hold true in humans?