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An accountancy practice donate unused prescription drugs california The bacteria are put in the solution, and when the solution cools, the bacteria become fixed in place. Connell and her colleagues, including Jason Shear, professor of chemistry, and Marvin Whiteley, professor of molecular biosciences, identify which bacteria they want to cage and in what shape. Then they fire the laser, using a chip adapted from a digital movie projector to project a two-dimensional image into the gelatin. Wherever it focuses, a solid matrix forms.