parvoviiruste hulka kuuluv väike üheahelaline DNA-viirus, mis on võimeline paljunema ainult adenoviiruse juuresolekul, any of several single-stranded DNA viruses (genus Dependovirus of the family Parvoviridae) that enter the nucleus of a host cell but are dependent on coinfection with an adenovirus or herpesvirus for their replication, that infect a wide range of hosts but do not appear to cause disease, and that are used in gene therapy as vectors to introduce genes into cells