A voltammetric biosensor was developed for the assay of microorganism populations. A tetracycline-modified glassy carbon electrode was used in the construction of the biosensor and an electrochemical cell with an elastic base was employed in the measurement. The possible mechanism of the electrode response was discussed. The determination limit of the microbial populations was 2–5 × 104 cells w...

The hemagglutination (HA) activity of two strains of Escherichia coli, each possessing different colonization factor antigens (CFA), was examined under different test conditions. The effects of ionic strength, temperature, pH, cations, and reaction surface on erythrocyte (RBC) agglutination were analyzed. Strain H-10407 (CFA/I) caused the agglutination of human, bovine, and chicken RBC, whereas...

background. the most common species isolated from primary endodontic infections are black-pigmented bacteria. these species are implicated in apical abscess formation due to their proteolytic activity and are fastidious in nature. therefore, the present study was carried out to evaluate the presence and identification of various pigmented porphyromonas and prevotella species in the infected roo...

BACKGROUND The Edinburgh Postnatal Depression Scale (EPDS) has been proposed as a one-dimensional instrument and used as a single 10-item scale. This might be considered questionable since repeated psychometric studies have shown multi-dimensionality, which would entail using separate component subscales. This study reappraised the dimensional structure of the EPDS, with a focus on the extent o...

Blastocystis hominis is a worldwide distributed microorganism with no definite host. In addition to human beings it has been diagnosed in variety of animals. This organism which is abundantly found in routine stool examinations and also 'in some cases has been identified as a factor causing severe diarrhea, earlier regarded as a fungi. Later it was distinguished as cyst of intesinal Trichomonas...