[Ben Krasnow] put together a tutorial in which he does an excellent job of explaining the ins and outs of designing transistor control circuits.

With its ability to store and transmit genetic information, DNA offers molecular cogs and gears that researchers can harness to produce biological circuits. Cells typically rely on gene expression ...

To help achieve more precise control of gene therapy, engineers have designed a new control circuit that can keep gene expression levels within a target range. The method could be used to deliver ...