Cohen

How the Heart Starts Beating

How the Heart Starts Beating

September 30, 2023

Becoming a full-fledged organism out of a handful of cells, complete with functioning tissues and organs, is a messy yet highly synchronized process that requires cells to organize themselves in a precise manner and begin working together.

This process is especially dramatic in the heart, where static cells must start beating in perfect unison.

Now, a cross-school collaboration led by researchers at Harvard Medical School and Harvard University has provided a glimpse into exactly how cells in the heart start beating.

In a study conducted in zebrafish, the...

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The new Firefly microscope is optimized to perform optogenetic studies examining many neurons at once. Each bright spot here represents a neuron from a genetically modified mouse. Credit: Vaibhav Joshi, Harvard University

How to see neurons in the dark

December 5, 2017

Walk outside on a clear summer twilight and you might see hundreds of minute lights spark and glow. Together, fireflies, which produce chemical light through bioluminescence, display a celestial pattern unlike anything on earth. Or, more precisely, unlike anything visible to our unassisted eyes.... Read more about How to see neurons in the dark