The sympathetic nervous system, which enables the fight-or-flight response, was thought to be present only in jawed vertebrates. Analysis of a jawless vertebrate suggests that this system might be a ...
In a recent study published in the journal Cell Reports Medicine, a team of researchers in China used an in vitro co-culture of adipocytes, cardiomyocytes, and sympathetic neurons to examine the ...
The sympathetic nervous system was thought to have evolved with jawed vertebrates. But lampreys—jawless, parasitic fish that suck out the blood of their hosts—have a simple one, per recent research.