The AIDS epidemic is spreading rapidly among women worldwide, offering increasing opportunities for vertical transmission of HIV. In Brazil, the prevalence of HIV infection among pregnant women is less than 1%. Therefore, the positive predictive value of an HIV EIA test tends to be lower than the more frequent indeterminate Western blot result. Pregnant women receiving antenatal care, from 2000...

The Serodia-HCV Particle Agglutination (HCV-PA) for the detection of HCV antibodies was compared with the Enzyme Immunoassay Test (UBI HCV EIA) for possible in-house use. A total of 150 specimens were analysed using UBI HCV EIA and Serodia-HCV PA. Of these, 80 (53.3%) were both PA and EIA positive and 59 (39.3%) were negative by both techniques. Eleven sera (7.4%) were found to be EIA-positive ...

A four-layer solid phase enzyme-immunoassay (EIA) with antisera against Nebraska calf diarrhoea virus (NCDV) as immunoreagents was developed to detect human rotavirus antigens from stool specimens of patients with acute rotavirus gastroenteritis. Polystyrene beads were used as the solid phase, guinea-pig and rabbit anti-NCDV immunoglobulin as the catching and secondary antibody, and peroxidase-...

Ionospheric total electron content (TEC) of the equatorial ionization anomaly (EIA) is studied by analyzing dual-frequency signals of the Global Position System (GPS) acquired from a network of receivers around the AsianAustralian region during 1996–2004. The latitude, occurrence time, strength of the most developed EIA crest, and crest-to-trough ratio (CTR) for both the noon and post-sunset se...

The aim of this study was to characterize the vascular remodeling in the external iliac artery (EIA) and the lower leg muscles in a rabbit shunt model created between the distal stump of the occluded femoral artery and the accompanying vein. Histology and immunoconfocal microscopy were used in this study. We found that: 1) both endothelial nitric oxide synthase (eNOS) and phosphorylated eNOS (P...

This paper presents a solution for the hardware implementation of EIA-709.1 Control Networking Protocol. It is the basic protocol of LonWorks systems that is widely used for the building system and the sensor system. The EIA 709.1 protocol has been implemented at the hardware level from physical layer to network layer to reduce the computing load on the CPU. VHSIC hardware description language ...

A commercial modification of an enzyme immunoassay (EIA) (Gonozyme; Abbott Laboratories, North Chicago, Ill.) for detection of Neisseria gonorrhoeae antigens was compared with conventional culturing. Specimens from males and females were collected at a sexually transmitted disease clinic; additional female specimens were collected at an obstetrics and gynecology clinic. EIA sensitivity and spec...

The purpose of this study was to compare the conventional radioimmunoassay (RIA) to an enzyme-linked immunoassay (EIA) for the measurement of Histoplasma antigen in banked urine specimens. A correlation between the two methods would allow the EIA to be used as a nonradioactive alternative to the established 125I RIA. The study used stored urine from patients diagnosed with histoplasmosis during...

A solid-phase enzyme immunoassay (EIA) with the capture antibody principle was developed and evaluated for detection of immunoglobulin M (IgM) specific for group B coxsackieviruses (CBV) in human serum. Of 19 patients who were culture positive for CBV type 4 infections, the EIA for CBV type 4 IgM was more sensitive (84%; 16/19 positive) than a standard microneutralization test (16%; 3/19 positi...

Four hundred and ninety two samples of serum from blood donors were screened for the presence of antibodies specific to cytomegalovirus using radioimmunoassay, a modified complement fixation test, and five commercially available tests: the Cetus CMV IHA, Abbott CMV total AB EIA, Cytomegalisa Stat EIA, Enzygnost EIA, and Virenz G-CMV EIA. A wide variation in results was found, with only 53.5% of...