White leghorn hens were immunized intramuscularly with formalin killed Klebsiella pneumoniae cells to generate Klebsiella pneumoniae antibodies (IgY) in egg yolk. Booster injections of increasing concentrations of antigen were given to raise the antibody level in egg yolk. Amount of protein varied from 0.87 7.4mg/ml in egg yolk throughout the immunization period. The antibodies were partially p...

A liquid phase blocking ELISA (LPB-ELISA) was developed for the detection and measurement of antibodies against infectious bronchitis virus (IBV). The purified and nonpurified virus used as antigen, the capture and detector antibodies, and the chicken hyperimmune sera were prepared and standardized for this purpose. A total of 156 sera from vaccinated and 100 from specific pathogen-free chicken...

background: prostate specific antigen (psa) is an important laboratory marker for diagnosis of prostatic cancer. thus, development of diagnostic tools specific for psa plays an important role in screening, monitoring and early diagnosis of prostate cancer. in this paper, the production and characterization of a panel of murine monoclonal antibodies (mabs) against psa have been presented.  metho...

background: dense granules are immunodominant proteins for the standardi-zation of immunodiagnostic procedures to detect neosporosis. in the presented study different fragment of a dense-granule protein was evaluated for serodiagno-sis of neospora caninum in cattle and water buffalo. methods: ncgra7, from n. caninum tachyzoites was amplified. pcr product and pmal-c2x plasmid were digested with ...

AIMS To develop an indirect ELISA using the heat shock protein (hsp60) of Chlamydia trachomatis as antigen. METHODS The hsp60 gene was amplified by PCR, expressed in the vector pDEV-107 and transformed into Escherichia coli. The recombinant protein, expressed as a beta-galactosidase fusion product, was captured onto a solid phase using a monoclonal antibody directed against beta-galactosidase...

Acute liver failure was diagnosed in a 12-year-old cat. Fine needle aspirate cytology revealed high numbers of unsheathed microfilariae and a hepatocellular reaction with no evidence of bacterial infection. The microfilariae were identified as those of Dirofilaria repens by acid phosphatase staining. The high number of microfilariae seen in both the blood and the liver aspirate samples as well ...

We developed a modified double-antibody sandwich enzyme-linked immunosorbent assay (ELISA) that detected relatively low concentrations of known Pneumocystis carinii antigen added to buffer or rat sera. Artificial immunization-derived polyclonal rabbit anti-P. carinii antibody was used on the solid phase to capture the antigen. Infection-derived (after P. carinii pneumonia) polyclonal rat anti-P...

An indirect enzyme–linked immunosorbent assay (ELISA) was developed for screening of antibody to avian infectious bronchitis virus (IBV). Antigen was prepared from whole-purified IBV Massachusetts serotype (BR 801 strain). Optimum dilution with minimum background for antigen concentration, rabbit anti-chicken conjugate and sera in developed ELISA was determined 0.1μg/ml, 1:3000 and 1:100, respe...

BACKGROUND Autoimmune thrombocytopenia (AITP) is characterized by autoantibody-induced platelet destruction. Although several studies have shown that pathogenic autoantibodies are mainly IgG directed platelet glycoproteins (GP), a platelet GP specific test is not available in clinical laboratories. The aim of this study was to evaluate the clinical usefulness of a Modified Antigen Capture Enzym...

Lymphatic filariasis, mainly caused by Wuchereria bancrofti and Brugia malayi, has been targeted for elimination by the World Health Organization by the year 2020. To achieve this goal, highly sensitive and specific diagnostic tests are necessary for close monitoring and evaluation of the control program. We employed an ELISA to detect the Og4C3 antigen and a polymerase chain reaction-based ass...