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These terms define your current search. Click the × to remove a term. Biological Sciences: botany > plant biology > plant anatomy > leaves > leaf blade × 120 items, grouped by Taxa - Viruses and Viroids (view ungrouped items) positive sense, single-stranded RNA viruses (1)    (Click to View) Ultrastructural studies of plasmodesmatal and vascular translocation of tobacco rattle virus (TRV) in tobacco and potato Acta physiologiae plantarum