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Dynamic, rapid changes in the heart that can be seen from the outside are dramatic, but they’re nothing compared to what can be seen inside heart cells themselves. And a research team from the University of St. Andrews has proven exactly that by placing microlasers inside these cells and monitoring changes at a microscopic and localized level.
In the team’s experiments, the microlasers were inserted into the cardiac cells of both neonatal and adult mice and zebrafish, as well as into cardiac slices from rats. The microlasers were internalized by neonatal cells, or were placed on top of the adult cells, measuring the contractility of the myofibrils inside those cells.
These devices were 10- to 20-µm…READ MORE