For common people, the T.Rex, scientifically called Tyrannosaurus rex (photo of the skeleton ©ScottRobertAnselmo), is the most ferocious predator in world’s history. Instead, among paleontologists for almost a century there’s been a dispute about whether it was a predator or a scavenger. Recently, a group of researchers has found in South Dakota the remains of a hadrosaur with the tooth of a T.Rex wedged between the vertebrae of its tail. This discovery is considered a proof that this animal was indeed a predator.
Professor Jean-Michel Claverie and Dr. Chantal Aberge of the French University of Aix-Marseille (Aix-Marseille Université) have discovered the largest viruses in the world, that have been called Pandoravirus. They have found two species, the Pandoravirus salinus, that lives in the saline water near the mouth of the Chilean river Tunquen, and the Pandoravirus dulcis, that lives in a freshwater pond near Melbourne, Australia.
A team of researchers led by scientists at the University of Nottingham, England, proposed an explanation for the fact that transposons, the so-called jumping genes that can be found in most living organisms, don’t kill their hosts.
A group of researchers at San Diego State University led by microbial ecologist Forest Rohwer found that the mucus that exist in the body of almost all the animals in various organs contain a type of bacteriophage (informally phage) viruses (image ©Adenosine) that can function as a second immune system that procects from infections.
Last Saturday the biochemist Christian de Duve died in his home in Nethen, Belgium. His health had deteriorated and a few weeks ago he decided to request euthanasia, which is legal in Belgium. In 1974, Christian de Duve received the Nobel Prize for Physiology or Medicine together with Albert Claude and George E. Palade for their discoveries concerning the structural and functional organization of the cell.