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 ...

Cilia-free stem cells offer new path to study rare diseases

A group of rare diseases called "ciliopathies"—polycystic kidney disease notable among them—emerge from defects in cilia, the tiny hair-like structures on the surface of almost every cell type. But the specific molecular-level ...

Plants: RNA notes to self

How does a developing plant shoot know how, where, and when to grow? Dividing cells need to pass messages from one another to coordinate growth. In plants, important messages are packaged into RNA, which are sent from cell ...

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