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The symbiosis between UCYN-A and haptophyte picoplankton plays a major role in oceanic nitrogen cycling. Though it bears some resemblance to freshwater examples, making it an interesting marine model, UCYN-A diversity means that many questions remain.
Optical and force nanoscopy enable visualization of intracellular and extracellular microbial structures with unprecedented resolution. This Review discusses the principles, advantages and limitations of the main optical and force nanoscopy techniques available.
Emergence of resistance in eukaryotic microbial pathogens is a major concern. This Review discusses the challenges posed by eukaryotic pathogens, therapies used to target them, emergence of resistance and new approaches to sustaining existing therapies and developing new ones.