polyomavirus. anatomy of virion

polyomavirus virus anatomy virion viral infection structure genome dna circular cancer nephropathy severe brain progressive multifocal leukoencephalopathy sv40 merkel cell replication tumor disease oncogenesis vaccine detection treatment pathogenesis immune response research epidemiology zoonotic scientific diagram healthy health medical science biology exam knowledge lesson explainer education biochemistry quiz instruction learning training schooling teaching coaching vector polyomavirus virion infection non-enveloped double-stranded genome caused like leukoencephalopathy