Scientists studying axolotls, zebrafish, and mice have uncovered a shared set of genes that may one day help humans regrow ...

When the human heart is damaged by a heart attack, stiff scar tissue eventually forms around the affected areas. This weakens ...

Humans and other mammals cycle through distinct sleep phases. One of them is easily recognized by the darting motion of the ...

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A zebrafish study shows that the gene nexmifb is essential for spinal motor neuron development. Its loss reduces motor neurons and axon growth ...

Scientists at the Sloan Kettering Institute have made a surprising find about how the hormone insulin contributes to skin pigmentation in fish. The discovery may have implications for human cancer. If ...

When given the chance, zebrafish willingly dose themselves with opioids — even putting themselves at risk in order to get their fix. Scientists tested the drug-seeking behavior in a tank that allows ...