Why frogs can't regenerate lost limbs like axolotls

In Lake Xochimilco of central Mexico dwells a rare salamander, the axolotl (Ambystoma mexicanum). In the wild, the axolotls do not metamorphose: adults very much resemble their larval counterparts and keep the external gills ...

Discovery of an elusive cell type in fish sensory organs

One of the evolutionary disadvantages for mammals, relative to other vertebrates like fish and chickens, is the inability to regenerate sensory hair cells. The inner hair cells in our ears are responsible for transforming ...

How cellular fingertips may help cells 'speak' to each other

What if you found out that you could heal using only a finger? It sounds like science fiction, reminiscent of the 1982 movie "E.T." Well, it turns out that your body's own cells can do something similarly unexpected. Researchers ...

Research illuminates embryonic stem cell fate

USC postdoctoral researcher Xi Chen knows that you have to break a few eggs in order to grow chicken stem cells. His work on maintaining embryonic stem cells (ESC) from chicken eggs provides insight into stem cell pluripotency ...

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