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When an RNA molecule (top) is packaged into a virus, it may be organized in either of two ways. a The body of the RNA occupies the centermost part of the virus, and the stem-loops reach outward toward the capsid, much like stalagmites in a grotto. b The body of the RNA is associated with the capsid proteins, and the stem-loops reach inward toward the center of the virus, resembling stalactites in a grotto
