Study finds why many IVF embryos fail to develop

In humans, a fertilized egg is no guarantee of reproductive success. Most embryos stop developing and perish within days of fertilization, usually because they have an abnormal number of chromosomes. Now, researchers at Columbia ...

How intricate patterns arise in developing tissues

Early development is like a carefully choreographed dance, with uniform swaths of cells arranging themselves into elaborate patterns—a first step toward the formation of functional organs. A flat layer of skin cells, for ...

'Simple' bacteria found to organize in elaborate patterns

Over the past several years, research from University of California San Diego biologist Gürol Süel's laboratory has uncovered a series of remarkable features exhibited by clusters of bacteria that live together in communities ...

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