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1.
Mem. Inst. Oswaldo Cruz ; 92(5): 625-9, Sept.-Oct. 1997. tab
Artículo en Inglés | LILACS | ID: lil-194205

RESUMEN

Continuing the Schistosoma mansoni Genome Project 363 new templates were sequenced generating 205 more ESTs corresponding to 91 genes. Seventy four of theses genes (81 per cent) had not previously been descibed in S. mansoni. Among the newly discovered genes there are several of significant biological interest such as synaptophysin, NIFs-like and rho-GDP dissociation inhibitor.


Asunto(s)
Animales , Schistosoma mansoni/genética , Genoma
2.
Mem. Inst. Oswaldo Cruz ; 90(2): 211-213, Mar.-Apr. 1995.
Artículo en Inglés | LILACS | ID: lil-319900

RESUMEN

Analysis of the genomes of schistosomes and one of their intermediate hosts, Biomphalaria glabrata, using Random Amplified Polymorphic DNA (RAPD) demonstrated that intraspecific genetic polymorphism in the parasite is limited but in the snail is highly pronounced. This suggests an important role for the snail in the determination of the epidemiology of the disease. In addition to their intraspecific stability, schistosome derived RAPDs exhibit a high level of interspecific polymorphism and are thus ideal for the construction of phylogenetic trees. For the detection of intraspecific polymorphisms extensive variation in the mitochondrial DNA is being exploited for the development of a PCR based test for Schistosoma mansoni. Gene level polymorphisms are being analyzed by Low Stringency Single Specific Primer PCR.


Asunto(s)
Animales , Masculino , Femenino , Biomphalaria , ADN , Polimorfismo Genético , Schistosoma , ADN de Helmintos , Reacción en Cadena de la Polimerasa/métodos
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