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Ultrastructure of the Schistosoma mansoni cercaria.
Dorsey, Charles H; Cousin, Carolyn E; Lewis, Fred A; Stirewalt, Margaret A.
Afiliação
  • Dorsey CH; University of the District of Columbia, 4200 Connecticut Avenue, NW, Washington, DC 20008, USA.
Micron ; 33(3): 279-323, 2002.
Article em En | MEDLINE | ID: mdl-11742750
ABSTRACT
The cercaria of the schistosome parasite is a short-lived, free-swimming larval stage that is infective for the mammalian, definitive host. This atlas describes the ultrastructure of the cells that comprise the cercaria of Schistosoma mansoni, a leading causative agent of human schistosomiasis. In addition to the cells which make up the various organ systems, such as the nervous, tegumental, osmoregulatory, muscular and primordial digestive systems, also we show the ultrastructure of those cells whose organization or location are not as well defined structurally but are essential nevertheless for the success of the parasite. These latter include the various support cells, and those cells that, upon differentiation into the adult worm, serve reproductive functions. A description is also given of the cells whose sole functions are realized only at the cercarial stage, chiefly involved in the vigorous act of skin penetration. Although we include a detailed review of the ultrastructure of S. mansoni cercariae, much of the information reported has not been previously published. In summary, this paper brings together an ultrastructural description of all the cell types presently known that make up the much studied larval stage of this medically important trematode.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Schistosoma mansoni Limite: Animals Idioma: En Revista: Micron Assunto da revista: DIAGNOSTICO POR IMAGEM Ano de publicação: 2002 Tipo de documento: Article País de afiliação: Estados Unidos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Schistosoma mansoni Limite: Animals Idioma: En Revista: Micron Assunto da revista: DIAGNOSTICO POR IMAGEM Ano de publicação: 2002 Tipo de documento: Article País de afiliação: Estados Unidos