Forty-five strains of Campylobacter pylori isolated from gastric biopsy specimens showed distinct hemagglutination activity. The activity was partially decreased by treatment with heat, trypsin, or an alkylating agent and was inhibited by porcine gastric mucin but not by various compounds, including D-mannose.

BACKGROUND Although nurses play an important role in humanitarian aid and disaster relief (HA/DR), little is known about the nursing activities that are performed in HA/DR. We aimed to clarify the nursing activities performed by Japanese nurses in HA/DR and to examine the factors associated with the frequency of nursing activities. METHODS A self-administered questionnaire survey was complete...

Extractable nuclear antigen (ENA) is composed of at least two components, one a ribonucleo-protein sensitive to ribonuclease or heat and the other a protein. Antibodies to ENA are associated with a relatively benign clinical course in patients with systemic lupus erythematosus (SLE) in which DNA anti DNA complexes are thought pathogenic. The effect of ENA and anti-ENA on DNA anti-DNA reactions ...

The hemolysis-in-gel method for detection of antibodies to rubella virus gave results which correlated well with results of hemagglutination inhibition and neutralization tests. With a diffusion time of 24 or 48 h, a linear correlation was obtained between the logarithm of antibody concentration and the diameter of the hemolytic zone. Fourfold, and even twofold, differences in serum antibody co...

Nontreponemal antibody tests such as the Venereal Disease Research Laboratory (VDRL) test are carried out on serum and widely used as screening tests for syphilis. The aim of the present study was to develop a screening test for syphilis making use of whole blood and VDRL liposomes. Antibody to human red blood cells was conjugated to VDRL liposomes and reacted with a diluted sample of patient w...

Hubert, Earl G. (Veterans Administration Center, Los Angeles, Calif.), George M. Kalmanson, and Lucien B. Guze. Preservation of antigen-coated sheep erythrocytes by freezing for use in indirect hemagglutination procedure. J. Bacteriol. 86:569-572. 1963.-Preservation of sheep erythrocytes, coated with various protein and lipopolysaccharide antigens, was accomplished by rapid freezing and storage...

In this article, we report the isolation and characterization of a gene that may be important in the adherence of avian pathogenic Escherichia coli to the avian respiratory tract. The E. coli strain HB101, which is unable to agglutinate chicken erythrocytes, was transduced with cosmid libraries from the avian pathogenic E. coli strain chi 7122. Enrichment of transductants that could agglutinate...

to detect the presence of infectious bronchitis virus (ibv) in infected allantoic fluid (af) of spf embryonated eggs rapid hemagglutination (ha) activity after treatment with neuraminidase enzyme was used. twenty ibv suspected materials were inoculated in spf embryonated eggs via chorioallantoic cavity. harvested afs were treated with neuraminidase enzyme and the presence of ibv was detected by...

Rabbit and cow anti-Streptococcus dysgalactiae sera were tested by bacterial agglutination, complement fixation, hemagglutination, and immunodiffusion for the presence of antibody. The results of these tests were compared with mouse-protection studies on the same serum to estimate which in vitro test would best reflect the in vivo protective capacity of serum. Identification of the antibody con...