Sunday, May 24, 2020

Cell reproduction dogma challenged

Meiosis is essential to sexual reproduction. For almost 15 years, it has been commonly held that retinoic acid, a molecule derived from vitamin A, triggers meiosis in mammalian germ cells. Yet new research demonstrates that meiosis in mice begins and proceeds normally even in the absence of retinoic acid. These findings set the stage for new research in the field of reproductive biology.

from Top Health News -- ScienceDaily https://ift.tt/2XDXZxx

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They fled the flames—now jaguars rule a wetland refuge

After devastating wildfires scorched the Brazilian Pantanal, an unexpected phenomenon unfolded—more jaguars began arriving at a remote wetla...