Seropositivity to Burkholderia pseudomallei does not reflect the development of cell-mediated immunity.

Cell-mediated immunity to Burkholderia pseudomallei, the causative agent of melioidosis, provides protection from disease progression. An indirect haemagglutination assay was used to detect antibodies to B. pseudomallei in 1500 healthy donors in an endemic region of Australia.

Effect of cryopreservation on the immunogenicity of umbilical cord blood cells.

Cryopreservation is the accepted method for long-term storage of cord blood (CB) cells. We evaluated the effects of using different cooling rates (1, 5, 7.5 and 10 degrees C/min) on CB cell allostimulatory and alloproliferative function, antigen expression and clonogenic potential.

Induction of autoimmune valvulitis in Lewis rats following immunization with peptides from the conserved region of group A streptococcal M protein.

Rheumatic heart disease (RHD) is considered to be an autoimmune disorder mediated by group A streptococcal (GAS) M protein-specific T cells and antibodies that cross-react with cardiac antigens and epitopes of the GAS M protein. In this study, Lewis rats were immunized with a pool of overlapping peptides spanning the conserved region of the GAS M protein in Complete Freund's Adjuvant, followed by immunization with Bordetella pertussis. Controls received adjuvants alone.

Demonstration of a cell-mediated immune response in melioidosis.

Melioidosis is a bacterial infection caused by Burkholderia pseudomallei. The aim of this study was to determine whether a cell-mediated adaptive immune response against B. pseudomallei developed in patients who had recovered from melioidosis.