Article ID Journal Published Year Pages File Type
2463178 Veterinary Immunology and Immunopathology 2007 9 Pages PDF
Abstract
IgG1 and IgG2 responses in symptomatic and asymptomatic L. infantum infections differed mainly in subclass production (ELISA values), with higher IgG2 production occurring particularly in symptomatic dogs. Nevertheless, we observed little difference in the idiotype expression of these IgG subclasses, which, in general, recognized the same antigenic fractions. While early L. infantum infection was characterized by recognition of polypeptide fractions of low molecular weight, mainly fractions of 14, 16 and 18 kDa by IgG1 and 14 and 16 kDa by IgG2, symptomatology was associated with recognition by both IgG subclasses of a 24 kDa fraction and other antigens belonging to the AG24 family.
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