Mice fed a diet high in saturated fat show shifts in their gut microbes and develop obesity-related inflammation.
February 25, 2009|
Giving birth to live young is thought to mainly occur in mammals and sharks, but a new study suggests that it was once a common mechanism for reproduction. A large group of ancient fish carried its embryos internally and bore live offspring, says a study published in Nature this week. Reconstructed Arhtrodira anatomy Image: Peter Trusler A team led by John Long, a paleontologist at the Museum Victoria in Melbourne, Australia, identified embryos in extinct, jawed fish from a group called Arthro