A simple direct fluorometric method for rapid identification of group A streptococci is described. The method permits the detection of the organism in mixed cultures without the aid of a microscope and is amenable to automated processing of specimens. Experience with the indirect fluorometric method revealed that nontrypsinized cells from a 10-fold dilution of overnight broth cultures could be ...

Release of marrow cells may be determined primarily by the restrictive barrier that separates marrow hematopoietic cords from sinusoids, and by the ability of the cell to negotiate the barrier pores which are of smaller diameter than the cell. This critical interrelationship may be further modulated by humoral agents (releasing factors). To test this hypothesis, we placed human marrow cells in ...

OBJECTIVE The purpose of this study was to investigate if an octadecyl (18C) minicolumn could be applied successfully for quality control of 99mTc exametazime (HMPAO). METHODS The 18C column system using saline eluent was validated against the Whatman 17 method in calculating the percent radiochemical purity of 99mTc-HMPAO. The behavior of 99mTc-pertechnetate (99mTc04-) and hydrolyzed-reduced...

In guinea pigs, when tubercufin sensitivity was passively transferred by lymphoid ceils sensitized to tubercle bacilli and labeled with tritiated thymidine, the transferred ceils were readily identified at the PPD skin test site (1). Further, the transfer of tuberculin sensitivity was not achieved by transferring BCG-sensitized cells enclosed in Millipore chambers (2). In mice, however, when tr...

Systemic fungal infections represent a major cause of morbidity and mortality in immunocompromised patients. The ever-increasing number of yeast species associated with human infections that are not covered by conventional identification kits, and the fact that moulds isolated from deep infections are frequently impossible to identify using classical methods due to lack of sporulation, has driv...

Background: Nowadays, image de-noising plays a very important role in medical analysis applications and pre-processing step. Many filters were designed for image processing, assuming a specific noise distribution, so the images which are acquired by different medical imaging modalities must be out of the noise. Objectives: This study has focused on the sequence filters which are selected ...