PlyG causes profound morphological changes in, and ultimately lysis of, RSVF1. a-c, We examined morphology by phase-contrast microscopy before PlyG treatment (a) and at 1 min (b) and 15 min (c) after treatment (with 5 U). d, e, Thin-section transmission electron micrographs (45,000 x ) 1 min (d) and 10 min (e) after treatment (with 5 U of PlyG). The arrows indicate membrane protrusions, and remnants thereof, pressing through zones of peptidoglycan degradation.

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