Due to the serovar diversity in Haemophilus (H.) parasuis, it is difficult to develop a universal serological method for detection of this pathogen. Here, we report a universal plate-agglutination test for detecting H. parasuis. Diagnostic antisera were prepared by mixing antisera of serovars 4, 5, 12, 13 and 14 in the optimized ratio. The results of the plate-agglutination test showed that the...

The Eocene Jahrum Formation in High Zagros was studied Kuh-e- Soukhteh and North Gahrou sections (southwest of Shahrekord region, Chahar-mahal Bakhtiari Province). This formation, composed limestone, marl, dolomitic limestone (dolostone), accumulated on a marine platform within the Neo-Tethys ocean realm. It yields rich foraminiferal fauna, which three larger benthic assemblage zones were ident...

Previously, we showed that Mycoplasma pulmonis can agglutinate trypsin-treated but not untreated erythrocytes (RBCs). This suggested that cryptic RBC binding sites were blocked by glycophorin, which is anchored to the RBC cytoskeletal network. In this report we show that RBCs from ankyrin-deficient mice in which the linkage between glycophorin and cytoskeleton is disrupted are agglutinated by M...

Complement-fixing and complement-fixing inhibiting (CFI) antibodies were demonstrated in the clinical and convalescent stages, respectively, of rhesus monkeys infected with either monkey poxvirus, Tanapoxvirus, or Yaba poxvirus. Specificity of the CFI antibody was confirmed by its failure to cross-react with heterologous poxvirus antigens and by experiments demonstrating the CFI test as being a...

A hemagglutination-inhibition (HI) test for rubella is described which utilizes human group O, rather than 1-day-old chick, erythrocytes. The test was found to be as sensitive and reproducible for detection of rubella antibody as HI tests employing chick erythrocytes. Advantages to the use of human erythrocytes are (i) they are more available, (ii) it is unnecessary to absorb natural agglutinin...

The B oligomer of pertussis toxin was purified from culture supernatants of Bordetella pertussis strains which do not secrete the S1 subunit. The purified B oligomer is devoid of toxicity for CHO cells and other in vivo properties of the toxin, such as leukocytosis and histamine sensitization, but it retains the abilities to agglutinate erythrocytes and to induce the proliferation of T lymphocy...

A carbohydrate-binding protein assayed by its ability to agglutinate formalinized sheep erythrocytes is synthesized between 3 and 9 hr after Dictyostelium discoideum cells are deprived of food, as the cells become cohesive. Agglutination of erythrocytes by this protein was inhibited by N-acetyl-D-galactosamine, D-galactose, and L-fucose, but other monosaccharides had little or no effect. The pr...