WIM VAN EGMOND / SCIENCE PHOTO LIBRARY WIM VAN EGMOND / SCIENCE PHOTO LIBRARY
Nematode worm. Light microscope footage of the soil-dwelling hermaphrodite roundworm Caenorhabditis elegans. C. elegans is used extensively in biological research. It can reproduce by self-fertilisation (resulting in identical offspring), and takes a short time to reach maturity. It is one of the simplest organisms with a nervous system and was the first organism to have its genome sequenced. C. elegans reaches a length of around one millimetre. Filmed with differential interference contrast illumination.
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