Mini-magnet test makes things sticky for TB

日期:2019-03-08 06:19:03 作者:窦秉娑 阅读:

TUBERCULOSIS can now be diagnosed in just 30 minutes, using magnetic nanoparticles which identify Mycobacterium tuberculosis in sputum, even at very low concentrations. TB is normally diagnosed by first spotting the bacteria in sputum under a microscope, and then sending the suspect samples away for confirmation. This involves growing larger colonies of the bacteria, which can take up to two weeks, delaying treatment and risking continued spread of the disease. The new test, developed by Ralph Weissleder of Harvard Medical School,