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The schistosomulum surface antigens of Schistosoma haematobium

Published online by Cambridge University Press:  06 April 2009

A. J. G. Simpson ,
M. Knight ,
P. Hagan ,
J. Hodgson ,
H. A. Wilkins  and
S. R. Smithers
A. J. G. Simpson
Affiliation:
Division of Parasitology, National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA
M. Knight
Affiliation:
Division of Parasitology, National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA
P. Hagan
Affiliation:
Medical Research Council Laboratories, Fajara, The Gambia, West Africa
J. Hodgson
Affiliation:
Medical Research Council Laboratories, Fajara, The Gambia, West Africa
H. A. Wilkins
Affiliation:
Medical Research Council Laboratories, Fajara, The Gambia, West Africa
S. R. Smithers
Affiliation:
Division of Parasitology, National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA
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Extract

Surface antigens of Schistosoma haematobium were identified by 125I-surface labelling of schistosomula followed by immunoprecipitation of the solubilized, labelled surfaces. The major antigens, after electrophoresis, formed a continuous smear corresponding to a molecular weight in the range 35–24000; in addition, a 17000 antigen was also identified. These surface antigens, in contrast to somatic antigens, were species-specific, as judged by immunoprecipitation with human anti-S. mansoni serum and serum from mice vaccinated with highly irradiated S. mansoni cercariae. S. haematobium surface antigens, however, were recognized to some extent by serum from mice chronically infected with S. mansoni. It is suggested that this cross-reactivity may reflect the heterologous immunity demonstrated experimentally between these two species, whilst the species-specificity of vaccine sera to surface antigens may mirror the highly specific immunity induced by vaccination.

Type
Research Article
Information
Parasitology , Volume 90 , Issue 3 , June 1985 , pp. 499 - 508
Copyright
Copyright © Cambridge University Press 1985

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References

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