KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Acanthamoeba castellanii amoeba, computer illustration. This is the reproductive and infective stage of the organism, or trophozoite form. A. castellanii, a free-living single-celled organism, is found in all aquatic habitats and soil. It can infect the eye causing Acanthamoeba keratitis, a potentially blinding inflammation of the cornea. Although rare, infection is more common amongst contact lens wearers.
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