WASHINGTON: The largest-known bacterium - a vermicelli-shaped organism that was discovered in shallow mangrove swamps in the Caribbean and is big enough to be seen with the naked eye - is redefining what is possible for bacteria, Earth's most ancient life form.
Scientists said on Thursday the bacterium, called Thiomargarita magnifica, is noteworthy not merely for its size - colossal for a single-celled organism at up to about eight-tenths of an inch (2 cm) long - but also because its internal architecture is unlike other bacteria.
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