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Figure 3
The life cycle of tetraviruses. Infected cells produce procapsids at neutral pH. Virus infection eventually triggers apoptosis, which induces a drop in pH and virus maturation. Release to the alkaline mid-gut allows the virus to infect new cells and start the cycle again.

IUCrJ
Volume 2| Part 1| January 2015| Pages 45-58
ISSN: 2052-2525
doi:10.1107/S2052252514023306