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. 2001 Apr 1;197(1):79–84. doi: 10.1111/j.1574-6968.2001.tb10586.x

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© 2001 Federation of European Microbiological Societies

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Light Microscopy. Vero cells incubated with culture supernatant from E. coli negative control strain K12C600 (A), and Vero cells 1 h after VT2y treatment (B) showed chromatin condensation, (C) cleaved nuclei (small arrowhead) and cytoplasmic vacuolization (long arrow), (D) formation of cytoplasmic blebbing. Bars, 10 μm. These features are characteristic of apoptosis following treatment with VT2y.