Researchers engineer E. coli to produce new forms of popular antibiotic

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In Science Advances, University at Buffalo researchers will report that they have managed to turn E. coli into tiny factories for producing new forms of the popular antibiotic erythromycin — including three that were shown in the lab to kill drug-resistant bacteria.
SOURCE: Latest Science News — ScienceDaily – Read entire story here.

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Stem cell switch on the move

The roots of a plant are constantly growing, so that they can provide the plant with water and minerals while also giving it a firm anchor in the ground. Responsible for these functions are pluripotent stem cells. In order to avoid differentiation and to remain pluripotent, these stem cells are dependent on signals from their neighboring cells. These signals are generated by only a small group of slowly dividing cells in the so-called quiescent centre inside the root. Biologists can now demonstrate how signals in plant roots determine the activity of stem cells.