The role of parasites in generating evolutionary novelty.
In this review, David Bermudes and Keith Joiner discuss the interrelationship between parasitism and mutualism and examine the parallel mechanisms used by parasites and mutualists to access and persist within the intracellular environment. By drawing analogies with mutualistic associations, they suggest mechanisms by which some parasites may ultimately benefit their hosts. They further speculate that some hosts may even become dependent upon their parasites.
Yale University School of Medicine, Department of Internal Medicine, Infectious Diseases Section, New Haven, CT 06510, USA.
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