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These terms define your current search. Click the × to remove a term. Taxa - Viruses and Viroids: positive sense, single-stranded RNA viruses > Tombusviridae > Necrovirus > Tobacco necrosis virus × 5 items, grouped by Breeding and Genetic Improvement (view ungrouped items) breeding (1)    (Click to View) Inter‐laboratory validation of PCR‐based protocol for detection of olive viruses EPPO bulletin genetic resources (1)    (Click to View) Inter‐laboratory validation of PCR‐based protocol for detection of olive viruses EPPO bulletin genetic techniques and protocols (1)    (Click to View) Multiplex RT-PCR for detection and identification of three necroviruses that infect olive trees European journal of plant pathology