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Volume 19, Number 4—April 2013

Research

Circovirus in Tissues of Dogs with Vasculitis and Hemorrhage

Linlin Li, Sabrina McGraw, Kevin Zhu, Christian M. Leutenegger, Stanley L. Marks, Steven Kubiski, Patricia Gaffney, Florante N. Dela Cruz Jr, Chunlin Wang, Eric Delwart, and Patricia A. PesaventoComments to Author 
Author affiliations: Blood Systems Research Institute, San Francisco, California, USA (L. Li, E. Delwart); University of California, San Francisco (L. Li, E. Delwart); University of California School of Veterinary Medicine, Davis, California, USA (S. McGraw, K. Zhu, S.L. Marks, S. Kubiski, P. Gaffney, F.N. Dela Cruz Jr, P.A. Pesavento); IDEXX Laboratories, West Sacramento, California, USA (C.M. Leutenegger); Stanford Genome Technology Center, Stanford, California, USA (C. Wang)

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Figure 3

Lymph node from sentinel dog from which dog circovirus was identified. A) Toluidine blue stain shows multiple macrophages within the medullary sinus contain vacuoles and discrete, oblong to round, variably stained cytoplasmic bodies (arrows). B) A single macrophage adjacent to a lymphocyte (upper left) and partial profiles of other cells. Intracytoplasmic inclusion bodies are distributed throughout the macrophage cytoplasm, along with mitochondria and vacuoles. Scale barA indicates 2 A�m. C) Int

Figure 3. . . Lymph node from sentinel dog from which dog circovirus was identified. A) Toluidine blue stain shows multiple macrophages within the medullary sinus contain vacuoles and discrete, oblong to round, variably stained cytoplasmic bodies (arrows). B) A single macrophage adjacent to a lymphocyte (upper left) and partial profiles of other cells. Intracytoplasmic inclusion bodies are distributed throughout the macrophage cytoplasm, along with mitochondria and vacuoles. Scale bar indicates 2 µm. C) Intracytoplasmic inclusion bodies contain granular content and sometimes paracrystalline to herringbone arrays of 10–11 nm diameter viral-like particles. Scale bar indicates 100 nm.

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