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Representation of the CP region (amino acids [aa] 120 to 160) containing the three amino acid differences (in boldface) among TYLCV-Sic, SicRcv, and TYLCV-Sar. The upper part shows the location of restriction sites used to construct some of the TYLCV-Sar mutants with amino acid replacements described in Table 1. Asterisks localize positions 129, 134, and 152.
