Chromosomes reconfigure as cell division ends

Cellular senescence—when a cell can no longer divide—is a programmed stage in a cell's life cycle. Sometimes, as in aging, we wish it didn't happen so much and sometimes, as in cancer, we wish it would happen more. Given ...

Researchers simulate information signaling between cells

(Phys.org)—Many natural systems are described by dynamics of traveling wavefronts. Sharp traveling fronts are employed in countless phenomena, including fluid convection, chemical reactions, and cellular phenomena. Living ...

Study hints at why parrots are great vocal imitators

An international team of scientists led by Duke University researchers has uncovered key structural differences in the brains of parrots that may explain the birds' unparalleled ability to imitate sounds and human speech.

In immune cells, X marks the spot(s)

There are many known sex differences in health and disease: cases in which either men or women are more likely to get a disease, experience a symptom, or have a certain drug side effect. Some of these sex differences are ...

Genetic signatures of domestication identified in pigs and chickens

Wild boars and red junglefowl gave rise to common pigs and chickens. These animals' genes evolved to express themselves differently, leading to signatures of domestication—such as weaker bones and better viral resistance—in ...

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