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The sexual maturation of female mice has been linked to longevity by researchers. They had previously established that mouse strains with lower circulating levels of the hormone IGF1 at age six months live longer than other strains. In new work, scientists report that females from strains with lower IGF1 levels>
Pregnancy is a biologically unusual situation where one organism lives and develops inside another that is genetically different.
Ordinarily, the immune system identifies and destroys the dissimilar tissue as if it were a parasite but in some early mammals changes 'turned down' the immune system, allowing the>
Remember when a small bacterium from California’s Mono Lake was supposed to rewrite the very definition of life? Headlines screamed: NASA finds “alien” life on Earth! The organism reportedly swapped out precious phosphorus - one of life’s six essential building blocks - for arsenic, the toxic villain in murder>
It used to be that broader understanding of zoology meant intuitively that new species would be harder to find and so it followed that there would be fewer of them when found - that is the nature of rarity.Now, because newer species are so rare, it is fashionable to label them nearly extinct even though they have>
We have shown diseases can be eliminated, like polio and smallpox, but can you eliminate something like COVID-19?Coronavirus was only recognized as distinct from the common cold in the 1960s so it's impossible to know what impact it had throughout history and was just called flu or something else. COVID-19 was the>
A new study of twins indicates that the genetic foundation for the brain’s ability to recognize faces and places is much stronger than for other objects, such as words. The results, which appear in the December 19 issue of the Journal of Neuroscience, are some of the first evidence demonstrating the role of genetics>
