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Not all pathogens are parasites. Many opportunistic infections can be caused by organisms that are normally commensal or even mutualistic. For example, this paper describes how multiple bacteria species can be pathogenic as well as mutualistic. Despite its generally innocuous nature, over the past 20 years S. epidermidis has emerged as a frequent ...


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Why a bi-layer? There has been an MD simulation carried out to investigate the biophysicochemistry of spontaneous bilayer assembly. There, lipids start in random orientations. The ordered bilayers we know and love spontaneously assemble in under 100ns. It would appear that the conditions for an ordered bilayer are so favourable that they take precedence ...


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The question is a matter of definitions. A parasite is an agent that causes harm to another agent A pathogen is an agent that causes disease to another agent. A disease is bad. Therefore, all pathogens are necessarily parasites. Note that some definitions of parasites, imply that the parasite benefits from the relationship. In which case, then the above ...


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Not only active parasitism by pathogens, but any kind of interaction that leads to advantage of one species while causing disadvantage to the other species is considered a parasitic interaction. In this post, Remi has explained why even Batesian mimicry can be considered a parasitic interaction. The only case where a microbe could be pathogenic but ...



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