By the preparation of specific type sera 24 types of streptococci within group D are designated on the basis of agglutination tests. Subtypes associated with three of these types are indicated by reciprocal absorption. Precipitin tests with absorbed sera substantiate the division of types by agglutination. Of 353 strains of streptococci identified serologically as group D and further specified ...

background: the assays currently available for the detection of specific anti- toxoplasma antibodies may vary in their abilities to detect serum immunoglobulins, due to the lack of a purified standardized antigen. the aim of this study was evaluation the recombinant toxoplasma gondii sag1 antigen for the serodiagnosis of acute and chronic toxoplasmosis. methods : this study describes an elisa u...

background: dirofilaria immitis and dirofilaria repens are the most common species of filarial nematodes described in the dogs. a single-step multiplex pcr was applied to detect and differentiate simultaneously and unequivocally d. im­mitis and d. repens on dna extracted from canine peripheral blood and besides to detect the seroprevalance of d. immitis by elisa in elazig province, turkey. a pc...

Antiserum was prepared in rabbits against the A antigen and a new antigen (labeled the D antigen) of yeast-phase cells of Blastomyces dermatitidis by using immunoelectrophoretic precipitin arcs as vaccine. The antiserum can be used as a reference serum in the immunodiffusion test for identyfying antibodies to the A antigen in sera from patients thought to have blastomycosis. Antibodies to the D...

Double fluorescence studies indicated that most mature lymphocytes of 11-52-wk-old mice possess both IgM and IgD-like surface immunoglobulins, while spleen cells from neonatal mice possess surface IgM only. These molecules cap independently with class-specific antisera, but co-cap when capping is induced by antigen. It is proposed that the two heavy chains on individual lymphocytes possess simi...

HL-A phenotypes were determined by a cytotoxicity assay on circulating lymphocytes of two boys with the premature aging syndrome, progeria. The antigenic phenotypes were not unusual inasmuch as they are frequently seen in the normal population. However, none of these antigens could be detected by the same assay on cultured skin fibroblasts from either individual, even when a significant mitotic...

Escherichia albertii is a newly described and emerging diarrheagenic pathogen responsible for outbreaks of gastroenteritis. Serotyping plays an important role in diagnosis and epidemiological studies for pathogens of public health importance. The diversity of O-antigen biosynthesis gene clusters (O-AGCs) provides the primary basis for serotyping. However, little is known about the distribution ...

46% of sera from 30 children with rheumatic chorea showed IgG antibody reacting with neuronal cytoplasm of human caudate and subthalamic nuclei. The antibody was also detected in 14% of 50 children with active rheumatic carditis. 55 normal control sera, as well as 148 sera from a broad variety of other disease states showed a low prevalence (1.8-4.0%) of positive reactions. In rheumatic chorea ...

Galactosyltransferaseactivity (UDP-galactose:A/-acetyl-o-glucosamine-D-galactosyltransferase) couldbemeasuredinthymus and sera from differentstrainsof mice.Total thymic homogenatesor thymocytepreparationsobtainedfromthymomacarry ing AKR/J miceexhibitedhigherenzymeactivity comparedto nonleukemic ontrolmice.A similardifferencewasalsonotedin Swiss mousethymus which developthymic leukemiaupon a sin...

BACKGROUND There is growing interest in linking vitamin D deficiency with autism spectrum disorders (ASDs). The association between vitamin D deficiency during gestation, a critical period in neurodevelopment, and ASD is not well understood. AIMS To determine the association between gestational vitamin D status and ASD. METHOD Based on a birth cohort (n=4334), we examined the association be...