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. 2014 May 5;9(5):e96681. doi: 10.1371/journal.pone.0096681

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© 2014 Assani et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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5A) Electron microscopy of non-CF macrophage infected with k56-2 only for 24 hours. White arrow indicates double membrane formation indicative of autophagosomes. 5B) EM of non-CF macrophage treated with IFN-γ for 24 hours. 5C) EM of CF macrophage infected with k56-2 only. Black arrow indicates single membrane vacuole. 5D) EM of CF macrophage treated with IFN-γ for 24 hours. White arrow indicates double membrane formation. Pictures are marked with 500 nm marker.