virus

 





1. Structure of the virus particle
FIGURE: Relative shapes, sizes, and structures of some representative plant viruses.
(A)Flexuous thread-like virus.
(B)Rigid rod-shaped virus. (B-1) Side arrangement of protein subunits (PS) and nucleic acid (NA) in viruses A and B. (B-2) Cross-section view of the same viruses. HC, hollow core.
(C)Short, bacillus-like virus. (C-1) Cross-section view of such a virus. (D)Isometric polyhedral virus. (D-1) Icosahedron representing the 20-sided symmetry of the protein subunits of the isometric virus. (E)Geminivirus consisting of twin particles. ( online information )