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pDawn control of the adhesin Ag43 enables light-controlled deposition of biofilm onto surfaces. (A) Ag43 was inserted downstream of pDawn control. Escherichia coli with pDawn-Ag43 can be optically stimulated with a projector to express Ag43 and to form biofilm at surfaces. (B) Cells engineered with the pDawn-Ag43 construct form biofilm contingent upon illumination (***P < 0.001). Wild-type and pDawn controls fail to form significant biofilm, and pBAD-Ag43 expression forms biofilm regardless of illumination. Representative 96-well crystal violet stains are shown below. (C) Increasing illumination intensity increases biofilm formation, saturating past ∼41 μW/cm2. Dashed curve, fit with Monod model. (D) Increasing illumination time increases biofilm formation up to approximately 8 h. Dashed curve, linear fit. (B–D, error bars represent SD, n = 4 wells.)

Scientists developed a new way to shape the growth of bacterial communities

By using light and genetically engineered bacteria, Stanford scientists have shaped the growth of bacterial communities. They have developed a technique that renders intricate...
Areas of the brain that get input from the eyes can be hijacked to control something outside the brain, such as a computer that generates a tone. Yellow arrows represent feedback between the rat’s visual cortex and striatum, which is key to learning new tasks. Ryan Neely image.

Retraining neurons to take action

Scientists at the University of California, Berkeley along with Columbia University and the Champalimaud Centre for the Unknown in Lisbon, Portugal have demonstrated the astounding...
Scientists Discovered How the Brain Selectively Remembers New Places

Scientists Discovered How the Brain Selectively Remembers New Places

When you go into a room, your brain is barraged with tactile data. On the off chance that the room is a place you...
stress

Stress can Lead to Risky Decisions

Making decisions is not always easy especially in stressful situations. MIT neuroscientists have now discovered that making decisions in this type of situation leads to high-risk, high-payoff...
MIT Neuroscientists Build Case for New Theory of Memory Formation

MIT Neuroscientists Build Case for New Theory of Memory Formation

Putting efforts towards revising memory models, MIT scientists proposed in a new study, in which they detailed how these silent engrams are formed and re-activated. Memory...
Gene Therapy Shows Promise for Reversing Blindness

Gene Therapy Shows Promise for Reversing Blindness

A new study by the University of Oxford suggests that it is possible to reprogram cells at the back of the eye to cure blindness....

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