22 February 2012
Vol 4, Issue 122

About The Cover

Cover image expansion

ONLINE COVER Pharmacy on a Chip. A high-resolution image of a microchip shows eight microreservoirs (in gold), each sealed by 20 metallic membranes (in blue). Farra et al. describe how these reservoirs can be loaded with drugs and interfaced with electronics to create an implantable drug delivery device. Once in patients, doctors send a wireless signal to the microchip, telling it to dissolve the membranes and release a discrete dose of drug—in this case, an osteoporosis therapeutic. See also the related Editorial by Watson. [CREDIT: LOLA FARRA/MICROCHIPS, INC.]