Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant. Each particle consists of a single-stranded deoxyribonucleic acid (DNA) surrounded by an icosahedral protein capsid. It is highly contagious and usually affects dogs and puppies, which have to be vaccinated against it. | |
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Crédit: | Science Photo Library / Harris, Roger |
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