crystal violet which inhibit the growth of Gram-positive bacteria. The differential ingredient is lactose. Fermentation of this sugar results in an acidic pH and causes the pH indicator, neutral red, ...

1-5 What Bacteria Use Quorum Sensing? Both gram-negative and gram-positive bacteria use quorum sensing. Generally, gram-negative bacteria employ acylated homoserine lactones as autoinducers, which ...

Bacteria can be engineered to sense a variety of molecules ... Using a new method that triggers cells to produce molecules that generate unique combinations of color, MIT engineers have shown that ...