Scientists use bacteria as micro-3-D printers

A team at Aalto University has used bacteria to
produce intricately designed three-dimensional objects made of
nanocellulose. With their technique, the researchers are able to
guide the growth of bacterial colonies through the use of strongly
water repellent—or superhydrophobic—surfaces. The objects show
tremendous potential for medical use, including supporting tissue
regeneration or as scaffolds to replace damaged organs. The results
have been published in the journal ACS Nano.