The largest bacterium ever discovered has unexpectedly complex cells:
By definition, microbes are supposed to be so small they can only be seen with a microscope. But a newly described bacterium living in Caribbean mangroves never got that memo . Its threadlike single cell is visible to the naked eye, growing up to 2 centimeters—as long as a peanut—and 5000 times bigger than many other microbes.
The discovery is “fantastic and eye-opening,” adds Victor Nizet, a physician scientist at the University of California, San Diego, who studies infectious diseases. The oversize bacterium is bigger than fruit flies and nematodes, common lab organisms that he and others sometimes infect with much smaller bacteria for their research.
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