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Now, using bright-field microscopy, the team tracked negatively charged silica microparticles suspended in water and found that the particles attracted each other to form hexagonally arranged clusters.

“Because we can get these images from just bright-field, it’s low-cost and it won’t be toxic,” says Johnson.

The simplest and least expensive kind is bright-field imaging.

Now, the Allen Integrated Cell can look at a bright-field image and then tell the scientists exactly what it looks like inside.