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

Fig. 10.

Fig. 10

Paramyxovirus negatively stained with PTA. The nucleic acid (RNA) is protected by proteins (nucleocapsid), which give the filament a ‘herring bone’ appearance. This nucleocapsid is contained inside a membrane envelope that features various surface proteins and appears as a fringed envelope. In this micrograph, the virus membrane has ruptured and the nucleocapsid is spilling out. The nucleocapsid is 15–20 nm wide.