Been busy since last almost 2 months, attended two National conferences as participant which was extremely exciting as I made new friends along with new contacts and of course learned a new thing or 2. This followed the unfortunate problem with uncertainty of examination (the teaching staff is boycotting the exams). Anyways now I am resuming blogging normally. This was brought to my attention by a friend.

Bio-engineering Department at Stanford University has managed to create a biological device that demonstrates the properties of conventional transistors and performs standard logical operations such as AND, NAND, OR, XOR, NOR, and XNOR. In fact, such transistors based on DNA and RNA - this is a tiny computer, in the classical definition. The authors call it the working logic of Boolean Integrase Logic, or abbreviated BIL gates.

Like the standard electronic transistor, a new biological transistor quite versatile, can work in different "schemes" of biological circuits. his opens up the opportunity for scientists designing new programmable biological devices from biological sensors and detectors to bio-fuels. For example, you can program a cell to conduct the event counter, for example, how many times she met with a particular substance. You can program it to respond in a special way to other external events or stimuli.

The scientific results scientists in the Science Journal.

The illustration shows the calculated result of computer simulation (top) and the actual output of the logic operations in a biological transistor (bottom).