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Virus Characteristics
VM 607 Midterm
10
Veterinary Medicine
Professional
02/11/2012

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Term
Parvoviridae
Definition
non-enveloped, small, ssDNA
short incubation period = 2-10 days
assembles progeny in nucleus
infects crypt cells
infects myeloid family of hematopoietic stem cells
infects fetus
Term
Circoviridae
Definition
non-enveloped, small
ssDNA, circular
long incubation period = 3-8 weeks
assembles progeny in cytoplasm
infects hematopoeitic system
infects respiratory tract
becomes systemic - kidney, dermis, subcutis
Term
Papillomaviridae
Definition
non-enveloped, small, dsDNA
variable incubation period
infects epithelial cells
Replicates in nucleus as epsiome
Term
Adenoviridae
Definition
Non-enveloped, medium sized, dsDNA
long incubation period (weeks)
replicates in nucleus
tropism for epithelial cells
Term
Poxviridae
Definition
most are non-enveloped
brick shaped complex virion surface, extra-large sized
short incubation period
localized infection underneath breach in skin
Disseminates infection to other organs from macrophages/monocytes
contains so much information that is has to replicate in cytoplasm
Term
Asfarviridae
Definition
Enveloped, spherical, extra-large size, dsDNA
unusually stable for enveloped virus
tropism for macrophages/monocytes
contains so much information that is has to replicate in cytoplasm
Term
Herpesviridae
Definition
enveloped, pleomorphic, large-sized
dsDNA
unstable in environment
Term
Alphaherpesvirinae
Definition
rapid replication, cytolytic even though it is enveloped
variable host range
pneumotropic and neurotropic
latent infections - neurons and sensory nerve ganglia
Term
Betaherpesvirinae
Definition
slow replication
latent infections - secretory glands, lymphoreticular tissue, kidney epithelium
Term
Gammaherpesvirinae
Definition
attacks lymphocytes, epithelial, fibroblastic cells
latent infections - tonsils, pharyngeal lymph nodes
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