Viruses are real, virus species are man-made, taxonomic constructions.
Van Regenmortel
M H V
MH
Ecole Supérieure de Biotechnologie de Strasbourg, UMR 7100, CNRS, Boulevard Sébastien Brandt, 67400 Illkirch, France. vanregen@esbs.u-strasbourg.fr
D009626:Terminology as Topic; D014780:Viruses / Q000145:classification*