TB Can Evade the Immune Response (IMAGE) American Journal of Pathology Caption Low levels of the anti-TB effector molecules perforin and granulysin in the granulomas (sold line) of a human TB-infected lymph node. Note the granular and polarized expression of the cytolytic effector molecules in cells located outside the lesions. Credit Rahman et al, 2009 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.