The field of science presently designated “virology” is a branch of microbiology and is thus linked to biology. The classification of a virus is a challenge because it simply does not exercise the basic functions attributed to a living entity: a virus does not have a metabolic system with its own respiration and growth, it lacks the ability to respond to stimuli, and it reproduces in a unique way.


Respiration Plague 

Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • Alfred Grafe
    • 1
  1. 1.Deutsche Gesellschaft für Hygiene und Mikrobiologie Institut für Medizinische Virologieder Universität HeidelbergHeidelberg 1Federal Republic of Germany

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