1887

Abstract

Here it is shown that the flagellated protozoon , commonly regarded as an early branching eukaryote because of its lack of mitochondria, has membraneous structures that partition the cationic, membrane-potential-sensitive fluorophore rhodamine 123. This organism also reduces a tetrazolium fluorogen at discrete plasma-membrane-associated sites. That these functions occur in distinctive specialized membrane systems supports the growing evidence that may not be primitive, but is derived from an aerobic, mitochondria-containing flagellate.

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2002-05-01
2021-10-24
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