Fig. 4From: The multifunctional protein CI of potyviruses plays interlinked and distinct roles in viral genome replication and intercellular movementSubcellular localization of TuMV CI mutants in Nicotiana benthamiana leaf cells. CI from the parental virus (a), CIm1 (b), CIm9 (c), and CIm21(d) was coexpressed with P3N-PIPO (panels I to III) or expressed alone (panel IV). Scale bar, 25 μmBack to article page