Figure 1: Local and systemic movement and induction of hypersensitive responses of Tobacco mosaic virus (TMV) in tobacco plants (N. tabacum cv. Xanthi nc.) (A) and N. megalosiphon (B-D). Block arrows indicate the size of a single, growing lesion towards the main vein at 5 d p.i. (C) and 12 d p.i. (D).