Quantum cascade lasers are made up of many thin layers of semiconductor. An injected electron makes a small energy transition as it moves from one layer to the next, emitting light on each cascade.

Leukocyte adhesion proceeds in a cascade-like fashion, starting with capture and followed by rolling and arrest. In all leukocytes, rapid arrest can be triggered by chemokines, but myeloid cells can ...

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Get the inside scoop on how colleges assess your high school and its course rigor. Featuring a former Admissions Officer, you'll gain crucial insights and actionable strategies during this 60-min ...