conclusions the newly developed simple indirect elisa showed high sensitivity and specificity with respect to vnt. developing such a simple, sensitive, and specific elisa which is much less expensive than the available commercial elisa kits can improve the detection of bvdv infections, help to eliminate the disease from herds, and decrease economic losses caused by this disease. background bovi...

A glycoprotein (27 kDa) was isolated from crude somatic antigen of Fasciola gigantica by two steps affinity chromatography and was used in early detection of experimental fasciolosis in cattle by indirect ELISA and in dot-ELISA formats. Although, anti-27 kDa antibodies could be detected after 3 weeks post infection (WPI) by dot - ELISA which was one week later than indirect ELISA. The test, dot...

Since the introduction of our plasma cortisol enzyme-linked immunosorbent assay (ELISA) [l] using affinity purified antiserum [2] into the routine steroid laboratory, we have embarked on the development of a simple urinary free or unconjugated cortisol ELISA which would allow measurement of both urine and plasma cortisol on the one ELISA plate. This paper describes for the first time an ELISA f...

Chlamydophila psittaci (formerly Chlamydia psittaci) is one of the major pathogens associated with turkey respiratory disease. Devastating outbreaks with high mortality rates, similar to those of 1950 to 1970 in the USA occasionally occur, but respiratory signs without or with low mortality mostly characterize outbreaks now a day. Accurate diagnostic methods should be made available. The presen...

Duck circovirus was a newly discovered pathogen that causing ducks immunosuppression in recent years, but it can not been cultured in vitro that limited its depth study. In the present study, the Cap gene that defect the nuclear localization signal (NLS) of DuCV was amplified and connected to the express vector pET-32a (+), to express the recombinant Cap protein in the bacterium Escherichia col...

The objective of this study was to compare an indirect ELISA, based on a purified 60 kDa envelope glycoprotein (gp51SU), with a Pourquire indirect ELISA for the detection of antibodies to the bovine leukemia virus. For conducting this research, 340 serum samples were collected from two different breeds of cows (Sarabi and Holestin) in different herds. Commercial ELISA revealed positive results ...

A direct enzyme-linked immunosorbent assay (ELISA) is described that uses horseradish peroxidase-labeled antigen for detection of immunoglobulin M (IgM) and IgA antibodies to toxoplasma. In this assay, polystyrene microtiter plates were sensitized with anti-human IgM or IgA antibody to separate IgM or IgA from other classes of antibody. The presence of IgM or IgA antibodies to toxoplasma (Tox-I...

The present study involved in analysis of 81 sera samples collected from Murrah (34), Surti (20) and non-descript buffaloes (27) with history of respiratory and reproductive disorders for IBR antibodies by indirect Enzyme linked immunosorbent assay (ELISA), Virus neutralization test (VNT) and Passive haemagglutination assay (PHA). The immunological assays viz., indirect ELISA, VNT and PHA revea...

AIM The aim was to evaluate lateral flow assay (LFA) as a field test for investigation of brucellosis outbreak in organized buffalo farm. MATERIALS AND METHODS A total of 153 serum samples were tested to detect the presence of brucella antibodies by LFA and three other serological tests i.e. rose bengal plate test (RBPT), protein G based indirect enzyme-linked immunoassay (iELISA), and compet...