3-D printing builds bacterial metropolises

Technique may help researchers study antibiotic resistance

CAGED IN  Colonies of bacteria (green) nestle inside 3-D printed gelatin shells (red) in this computer-assisted 3-D microscopy image. Researchers can use 3-D printing to simulate social interactions between microorganisms.

J.L. CONNELL ET AL/ PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES 2013

Using a laser beam “printer” and globs of jelly as ink, scientists can now print tiny 3-D cities of bacteria in virtually any shape.