Findings turn events in early TB infection on their head, may lead to new therapy

Masses of immune cells that form as a hallmark of tuberculosis (TB) have long been thought to be the body's way of trying to protect itself by literally walling off the bacteria. But a new study in the January 9th issue of the journal Cell, a Cell Press publication, offers evidence that the TB bacteria actually sends signals that encourage the growth of those organized granuloma structures, and for good reason: each granuloma serves as a kind of hub for the infectious bugs in the early stages of infection, allowing them to expand further and spread throughout the body.

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