A new frog species has been discovered hopping around South America - with nothing to hide. The Guajira Giant Glass Frog lives on an isolated mountain range in Colombia. It's described as a ...

MINNEAPOLIS — The pink, white and red blob of tissue quivers in a vat of clear goop about the size of a kitchen sink. Graduate students whiz around this slimy beating heart and crawl under the tubes ...

Researchers have developed a molecule that could help to map — and potentially mend — the hard-to-see cells that keep the heart beating 1. The cardiac conduction system (CCS) is a network of heart ...

New study reveals that heart cells in zebrafish start beating suddenly and all at once to form a synchronized heartbeat. In developing zebrafish hearts, each cell can beat on its own, and unlike in an ...

A cross-department collaboration headed by researchers at Harvard Medical School and Harvard University has witnessed the moment at which cells in the zebrafish embryo heart start beating in unison ...