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Pitt study: Lung lesions of TB variable, independent whether infection is active or latent
Date:12/15/2013

bacteria and sterilize some granulomas, but bacteria persisted in others and spread to create new granulomas," Dr. Flynn said. "You need only one granuloma to 'go bad' in order to get active TB."

Even when an animal had a severe, active infection, some of their granulomas were sterile, indicating the immune system was capable of killing bacteria, the researchers found.

"We don't know yet why the immune response produced different results in different lesions," Dr. Flynn said. "When we develop a deeper understanding of why the immune response produced different results in different lesions, we will be closer to harnessing the right mechanisms to develop effective vaccines to prevent TB."


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Contact: Anita Srikameswaran
SrikamAV@upmc.edu
412-578-9193
University of Pittsburgh Schools of the Health Sciences
Source:Eurekalert

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