21. The virions that leave the cell egress through budding. 22. The virion has a diameter from 80 to 100 nanometers and is pleomorphic. 23. The Z protein forms homo oligomers and a structural component of the virions . 24. Each blister contains infectious virus particles ( virions ). 25. WYLV virions are 1600 1850 nm in length and 10 nm in diameter. 26. It has also been shown that tetherin is incorporated into newly formed virions . 27. The infectious virion contains an inner " core particle " enclosing viral genome. 28. However, all orthopoxviruses exhibit identical brick-shaped virions by electron microscopy. 29. With the newly formed virions , more negative sense RNA molecules are produced. 30. These are used to arrange the virion structure and organize the viral genomes.
