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Related to Mastigophora: Giardia lamblia
a subphylum of protozoa, including all those that have one or more flagella throughout most of their life cycle, and a simple, centrally located nucleus; many are parasitic in both invertebrates and vertebrates, including humans.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
The flagellates, a subphylum of Protozoa having one or more flagella, a single vesicular nucleus, and symmetric binary fission; sexual reproduction is unknown in many groups (for example, Volvox, Trypanosoma, Euglena). It consists of two classes: Phytomastigophorea (to which Euglena belongs), which contains chlorophyll and is therefore photosynthetic and holophytic (although this has secondarily been lost in some groups), and Zoomastigophorea (including Trypanosoma and Leishmania), which lacks chromatophores and is heterotrophic.
[G. mastix (mastig-), a whip, + phoros, bearing]
Farlex Partner Medical Dictionary © Farlex 2012
Mastigophoraa group usually given the status of class (corresponding to flagellata) in older classifications, but in more modern classifications considered to be of kingdom-equivalent status. The group contains both holozoic and holophytic forms.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005