Saclike, electron dense structure in the anterior portion of a zoite of a member of the phylum Apicomplexa; perhaps involved in the penetration of host cells.

Microbiology. . 2009.

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  • Rhoptry — A rhoptry is a specialized secretory organelle. Rhoptries, as well as micronemes, are characteristic of the motile stages of Apicomplexa protozoans, (specifically merozoites), and are usually located toward the apical end of the organism. These… …   Wikipedia

  • rhoptry — Electron opaque dense body found in the apical complex of parasitic protozoa of the Phylum Apicomplexa …   Dictionary of molecular biology

  • rhoptry — Electron dense club shaped, tubular or saccular organelles, extending back from the anterior end of sporozoites and other stages of certain sporozoans in the subphylum Apicomplexa. SYN: paired organelles, toxoneme. [G. rhopalon, club] * * *… …   Medical dictionary

  • Microneme — Micronemes are cellular organs, or organelles, possessed by Apicomplexa protozoans that are restricted to the apical third of the protozoan body. They are surrounded by a typical unit membrane. On electorn microscopy they have an electron dense… …   Wikipedia

  • toxoneme — SYN: rhoptry. [G. toxon, bow, + nema, thread] * * * toxo·neme (tokґso nēm) rhoptry …   Medical dictionary

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  • Ciliate — For the type of leaf margin, see Leaf#Margins (edge). Ciliated Cells Temporal range: Ediacaran Recent …   Wikipedia

  • Flagellate — Not to be confused with flagellation. Flagellata from Encyclopædia Britannica …   Wikipedia

  • Microbiology — An agar plate streaked with microorganisms …   Wikipedia

  • Flagellum — For the insect anatomical structure, see Antenna (biology). For the flagella of male Solifugae, see Solifugae. Flagella Code TH H1. A flagellum ( …   Wikipedia

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