It has T=3 icosahedral symmetry
The capsid is about 35 nm, spikes protrude from 30 vertices.
The cellular tropism: enterocytes / epithelial cells of the intestinal tract.
“Human Astroviruses.” National Center for Biotechnology Information. U.S. National Library of Medicine, n.d. Web. 19 Mar. 2015.
Knipe, David M., and Bernard N. Fields. “Chapter 21: Astroviridae.” Fields’ Virology. 6th ed. Philadelphia: Lippincott Williams & Wilkins, 2013. 609-28. Print.
“ViralZone: Astroviridae.” ViralZone: Astroviridae. ExPASy, n.d. Web. 19 Mar. 2015.