A new Brazilian study has revealed the key role of the protein periostin and stellate pancreatic cells in allowing pancreatic cancer to infiltrate nerves and spread early, increasing the risk of metastasis. The research demonstrates how the tumor…
Growth rings preserved in fossilized leg bones have been used to estimate how fast Tyrannosaurus rex grew and how old the specimen was when it died. Based on those rings, earlier studies suggested the giant carnivore reached adult size by about…










