Magnified 3850X, this 2002 scanning electron microscope (SEM) image revealed some of the ultrastructural morphology exhibited by what is thought to be a single Hartmannella vermiformis amoeba cyst and debris artifact. The amoeba assumes the cystic stage of its life cycle under harsh conditions such as drought, or when there is an accumulation of environmental toxins, thus reducing its metabolic needs. Under these circumstances, the protozoan produces a protective coat and goes into a dormant state. CDC/Dr Rodney Donlan 2002

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Magnified 3850X, this 2002 scanning electron microscope (SEM) image revealed some of the ultrastructural morphology exhibited by what is thought to be a single Hartmannella vermiformis amoeba cyst and debris artifact. The amoeba assumes the cystic stage of its life cycle under harsh conditions such as drought, or when there is an accumulation of environmental toxins, thus reducing its metabolic needs. Under these circumstances, the protozoan produces a protective coat and goes into a dormant state. CDC/Dr Rodney Donlan 2002

SuperStock offers millions of photos, videos, and stock assets to creatives around the world. This image of Magnified 3850X, this 2002 scanning electron microscope (SEM) image revealed some of the ultrastructural morphology exhibited by what is thought to be a single Hartmannella vermiformis amoeba cyst and debris artifact. The amoeba assumes the cystic stage of its life cycle under harsh conditions such as drought, or when there is an accumulation of environmental toxins, thus reducing its metabolic needs. Under these circumstances, the protozoan produces a protective coat and goes into a dormant state. CDC/Dr Rodney Donlan 2002 by CDC/IMAGE POINT FR/BSIP is available for licensing today.