Pi·ro·plas·mia (pi″ro-plaz-meґə) [L. pirum pear + plasma] a subclass of heteroxenous parasitic protozoa (class Sporozoea, subphylum Apicomplexa), occurring as piriform, round, or rod-shaped cells or ameboid cells without a conoid, oocysts, spores, pseudocysts, and flagella, and usually without subpellicular microtubules but with a polar ring and rhoptries. Locomotion is accomplished by flexion, by gliding, or, in sexual stages of certain species, by large axopodium-like organelles (strahlen). They are parasitic in the erythrocytes and other circulating and fixed cells of the host, with merogony occurring in vertebrates and sporogony in invertebrates, and producing sporozoites with a single-membraned wall. Ticks are the vectors of most of the piroplasmids. It comprises a single order: Piroplasmida.

Medical dictionary. 2011.

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  • Piroplasmida — An order of sporozoan protozoa (subclass Piroplasmia, class Sporozoea) consisting of the families Habesiidae, Theileriidae, and Dactylosomatidae; includes heteroxenous tick borne blood parasites of vertebrates with reduced apical complex, lacking …   Medical dictionary

  • List of B codes for MeSH — The following is a list of the B codes for MeSH. It is a product of the United States National Library of Medicine.Source for content is [http://www.nlm.nih.gov/mesh/filelist.html here] . (File 2006 MeSH Trees .)MeshNumber|B01|Animals… …   Wikipedia

  • Cytomere — Cytomeres are structures that are formed when the contents of a single large schizont are separated into multiple daughter cells, in the course of schizogony.[1] Cytomeres are caused by complex invaginations of the surface of the schizont. They… …   Wikipedia

  • Piroplasmida — Taxobox | color = khaki name = Piroplasmida regnum = Protista phylum = Apicomplexa classis = Aconoidasida subclass = Piroplasmia ordo = Piroplasmida subdivision ranks= Families subdivision = Babesiidae * Babesia Theileriidae * Theileria… …   Wikipedia

  • Babesia — Babesien Babesien (Babesia) Systematik Stamm: Apicomplexa Klasse …   Deutsch Wikipedia

  • Babesien — (Babesia) Systematik Stamm: Apicomplexa Klasse: Sporozoen (Sporozoa) …   Deutsch Wikipedia

  • Apicomplexa — A phylum of the subkingdom Protozoa, which includes the class Sporozoea and the subclasses Coccidia and Piroplasmia, and is characterized by the presence of an apical complex. [L. apex, pl. apicis, tip, summit, + complexus, woven together] * * *… …   Medical dictionary

  • Sporozoea — A large class of protozoans (phylum Apicomplexa, subkingdom Protozoa) consisting of obligatory parasites with simple spores lacking polar filaments; cilia and flagella are absent (except for microgametes, found in some groups), and locomotion is… …   Medical dictionary

  • piroplasm — piro·plasm pir ə .plaz əm or piro·plas·ma .pir ə plaz mə n, pl piro·plasms or piro·plas·ma·ta .pir ə plaz mət ə BABESIA (2) piro·plas·mic .pir ə plaz mik adj * * * pi·ro·plasm (piґro plaz″ …   Medical dictionary

  • piroplasmid — piro·plas·mid plaz məd adj of or relating to the Babesiidae piroplasmid n BABESIA (2) * * * pi·ro·plas·mid (pi″ro plazґmid) 1. pertaining or relating to protozoa of the subclass Piroplasmia. 2. piroplasm …   Medical dictionary

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