ScienceDaily: Biotechnology News

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• New technique advances bioprinting of cells
• Environs prompt advantageous gene mutations as plants grow; changes passed to progeny
• When viruses infect bacteria: Looking in vivo at virus-bacterium associations

New technique advances bioprinting of cells Posted: 01 Jul 2011 09:16 AM PDT By extending pioneering acoustical work that applied sound waves to generate droplets from fluids, researchers have made encouraging preliminary findings at an early and crucial point in a stem cell's career known as embroid body formation.

Environs prompt advantageous gene mutations as plants grow; changes passed to progeny Posted: 01 Jul 2011 09:16 AM PDT Researchers have found that the environment not only weeds out harmful and useless genetic mutations in plants through natural selection, but actually influences helpful mutations, and that these beneficial changes are passed on to the next generation.

When viruses infect bacteria: Looking in vivo at virus-bacterium associations Posted: 01 Jul 2011 07:17 AM PDT Viruses are the most abundant parasites on Earth. Well known viruses, such as the flu virus, attack human hosts, while viruses such as the tobacco mosaic virus infect plant hosts. More common, but less understood, are cases of viruses infecting bacteria known as bacteriophages, or phages. In part, this is due to the difficulty of culturing bacteria and viruses that have been cut off from their usual biological surroundings in a process called in vitro. Researchers have now used a clever technique to look at virus-bacterium interactions in vivo, that is, within an organism's normal state.

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