ScienceDaily: Biotechnology News |
| The forces of attraction: How cells change direction Posted: 04 Jul 2011 05:26 AM PDT Many cell types in higher organisms are capable of implementing directed motion in response to the presence of certain chemical attractants in their vicinity. Scientists have now developed a novel technique to expose an ensemble of living cells to rapidly varying concentrations of chemoattractants.  |
| The genome guardian's dimmer switch: Regulating p53 is a matter of life or death Posted: 30 Jun 2011 02:17 PM PDT Scientists have found clues to the functioning of an important damage response protein in cells. The protein, p53, can cause cells to stop dividing or even to commit suicide when they show signs of DNA damage, and it is responsible for much of the tissue destruction that follows exposure to ionizing radiation or DNA-damaging drugs such as the ones commonly used for cancer therapy.  |
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