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. 2005 Nov 2;37(2):91–106. doi: 10.1016/j.micron.2005.10.001

Fig. 6.

Fig. 6

Parvovirus B19 particles negatively stained with PTA. These small round featureless viruses have been aggregated into a clump by specific antibody. Parvoviruses are 21–26 nm in diameter.