Biologists discover a trigger for cell extrusion

For all animals, eliminating some cells is a necessary part of embryonic development. Living cells are also naturally sloughed off in mature tissues; for example, the lining of the intestine turns over every few days.

Warbling wrens don't just tweet, they sing duets

(AP) -- They may not be Sonny and Cher, but certain South American birds sing duets, taking turns as the tune goes along. "Calling it a love song is probably too strong a word," says researcher Eric S. Fortune of Johns Hopkins ...

Brain Versus Gut: Our Inborn Food Fight

(PhysOrg.com) -- The relatively larger human brain makes us the most intelligent of the primates. But if we're so smart, how come we've eaten our way into an obesity epidemic? One reason is the relatively smaller human stomach ...

New stem cell research takes aim at origins of human cancers

How do cells become cancerous, multiply uncontrollably, and form into tumors? And what role do aberrant embryonic stem cells play? These are big questions explored by medical researchers since the embryonic theory of cancer ...

Autistic mice act a lot like human patients

UCLA scientists have created a mouse model for autism that opens a window into the biological mechanisms that underlie the disease and offers a promising way to test new treatment approaches.

Network research needs to focus on temporality and weightedness

The study of complex networks in statistical physics and computational science has become more and more focused on so-called dynamic networks. Where traditional approaches have treated the links in networks as static, contemporary ...

Making lab-grown brain organoids 'brainier'

By using stem cells to grow miniature brain-like organs in the lab, scientists have opened a new avenue for studies of neurological development, disease and therapies that can't be conducted in living people. But not all ...

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