Examples of immunological reactions to arthropod parasites include responses by hosts to the following stimuli: excretory and secretory antigens produced by myiasis-producing larvae or skin-dwelling (mange) mites salivary antigens of blood-sucking arthropods. In many cases, these are hypersensitivity reactions, which often appear not to produce very deleterious effects on the parasites. However...

Culture filtrate proteins (CFPs) of M. bovis were produced by culturing the organism for a period of 3 weeks. These CFPs elicited a good delayed hypersensitivity (DTH) reaction in cattle and guinea pig. However, CFPs showed least cross-reactivity when tested in guinea pigs sensitized with M. bovis BCG and M. phlei. CFPs were found to be well recognized by T-cells of single intradermal test (SID...

An immunoperoxidase technique was applied to formalin and Helly fixed paraffin wax sections from cases of ulcerative colitis complicated by dysplasia and carcinoma for carcinoembryonic antigen and components of the colonic secretory immunoglobulin system--namely, secretory component, IgA, and J chain. Sections from both resection specimens and mucosal biopsies were available. Intensity of immun...

The seroreactivity of a cocktail of purified mycobacterial excretory–secretory (ES) antigens ES-31, ES-41 and ES43 was assessed by ELISA and immunoblotting in patients with pulmonary tuberculosis. The ES-31 antigen was isolated by affinity chromatography and ES-41 and ES-43 were isolated by fast protein liquid chromatography from Mycobacterium tuberculosis H37Ra culture filtrate. Seven of 27 pu...

The purpose of this study was the evaluation of Helicobacter pylori infections in children and adults from two indigenous communities of Delta Amacuro State, Venezuela, that differ in hygienic conditions of the housing. The evaluation was performed in 98 children (mean age 7 +/- 3.37 years) and their mothers (33.96 +/- 13.77 years) from two communities of Warao lineage. Anti-H. pylori serum IgG...