Debating the origins of placental mammals; H. pylori-human coevolution; ant, bee, and wasp queens emit similar pheromones; profiling protein expression in single cancer cells A series of rodent ...

The lack of physiologically relevant models of placental development stymies efforts to close these knowledge gaps. Although animal models have provided valuable insight into the organ’s development, ...

It is very difficult to know exactly the history of the Earth. For millions of years, the planet was inhabited by species ...

That placental development was so far along 125 ... Springer is part of a new generation of researchers who examine the strands of an animal's DNA rather than scraping dirt from fossils at a ...

Tarsiers have five chitinase genes to digest the high amount of chitin in their insectivorous diet, which likely represents the ancestral condition of all placental animals, including humans.

Humans and other animals worldwide are increasingly exposed ... microplastics in fetal tissue from two of the cats and in placental tissue from three of the cats. They found a total of 19 ...