ScienceDaily: Biotechnology News |
| Glow of recognition: New detectors could provide easy visual identification of toxins or pathogens Posted: 14 Dec 2011 07:29 AM PST Researchers have developed a new way of revealing the presence of specific chemicals -- whether toxins, disease markers, pathogens or explosives. The system visually signals the presence of a target chemical by emitting a fluorescent glow.  |
| 'Pep talk' can revive immune cells exhausted by chronic viral infection Posted: 13 Dec 2011 04:02 PM PST Chronic infections by viruses such as HIV or hepatitis C eventually take hold because they wear the immune system out, a phenomenon immunologists describe as exhaustion. Yet exhausted immune cells can be revived after the introduction of fresh cells that act like coaches giving a pep talk, researchers have found.  |
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