نتایج جستجو برای: chromogenic

تعداد نتایج: 2607  

Journal: :American journal of clinical pathology 2009
Frédérique Penault-Llorca Michael Bilous Mitch Dowsett Wedad Hanna Robert Yoshiyuki Osamura Josef Rüschoff Marc van de Vijver

Patients with human epidermal growth factor receptor-2 (HER2)+ breast cancer are eligible for trastuzumab treatment; therefore, accurate assessment of HER2 status is essential. Until recently, only 2 methods were validated for determining the HER2 status of breast tumors in the routine diagnostic setting: immunohistochemical analysis and fluorescence in situ hybridization (FISH). Recently, brig...

Journal: :The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases 2007
Jorge A S Ferreira Andréa Cauduro de Castro Marion P Rocha Gustavo Riboldi Pedro Alves d'Azevedo

In a four-year period (July/2001-June/2005), 410 Haemophilus spp. isolates were studied. Those were isolated from sputum at Hospital Nossa Senhora da Conceição (NSC) in Porto Alegre city (RS). beta-lactamase enzyme was detected in 113 (27.6%) of isolates through chromogenic cephalosporin method. Fifty-eight (51.3%) of them showed sensibility to ampicillin through disc-diffusion method using Hae...

Journal: :Clinical chemistry 1983
M Ishaq R Ali

In this enzyme-linked immunosorbent assay (ELISA) for detection of antibodies against extractable nuclear antigens (ENA) in sera of patients with systemic lupus erythematosus (SLE), nylon is used as solid phase for antigen binding instead of the commonly used polystyrene surface. Optimal conditions for activation of the nylon beads, antigen coating, and other relevant factors have been investig...

Journal: :Clinical chemistry 2001
G L Hortin I Warshawsky M Laude-Sharp

BACKGROUND Proteinase activities are often measured using chromogenic substrates that are much smaller than physiological substrates. METHODS The hydrodynamic size of macromolecular substrates (macrosubstrates) prepared by linking small chromogenic substrates to polyethylene glycol was determined by gel filtration. Efficiency of macrosubstrate cleavage by proteinases and alpha(2)-macroglobuli...

Journal: :Journal of clinical microbiology 2005
Frank Kipp Barbara C Kahl Karsten Becker Ellen J Baron Richard A Proctor Georg Peters Christof von Eiff

To identify the most rapid and reliable technique for recovery and identification of Staphylococcus aureus small-colony variants (SCVs), the colonial appearance of 106 isolates representing SCVs and the normal phenotype were evaluated on two newly described chromogenic agar media. Although almost all of the SCVs grew on the chromogenic agar media, they did not exhibit a change of color. In comp...

Journal: :Haemostasis 1984
J van Putten M van de Ruit M Beunis H C Hemker

Spectrophotometric heparin assays which are based on the catalytic effect of heparin on either the inactivation of thrombin or that of factor Xa by antithrombin III, were adapted for use in a laboratory batch analyzer. Optimal conditions were determined for assays using the chromogenic substrates Chromozym-Th and S-2238 with thrombin, and S-2222 with factor Xa. Inactivation of the clotting enzy...

Journal: :Pathophysiology of Haemostasis and Thrombosis 1979

Journal: :journal of the iranian chemical research 0
chenyi wang department of chemistry, huzhou university, huzhou 313000, china feng cao department of chemistry, huzhou university, huzhou 313000, china ping xia department of chemistry, huzhou university, huzhou 313000, china liuyan cao department of chemistry, huzhou university, huzhou 313000, china ping wang colleges of chemical engineering, nanjing forestry university, nangjing 210037, china

the traditional measurement methods of 3 kinds of aluminum species and the total aluminum content in polyaluminum solutions are al-ferron timed complex spectrophotometry and edta chelatometry respectively. but eachof these methods has different deficiencies. in this paper, microwave digesting technical had be coupled with the radiate ferron spectrophotometry to rapid mensurate the concentration...

Journal: :medical laboratory journal 0
mahmoud alebouyeh laboratory research center, ministry of health and medical education, tehran, iran zahra abedi biology unit of food and drug administration for quality control, food and drug administration, ministry of health and medical education, tehran, iran hossein rastegar health and cosmetics research center, food and drug administration, ministry of health and medical education, tehran, iran hasan bagheri faculty of engineering, islamic azad university, research and sciences branch, saveh, iran javad vaez pasteur institute of iran, karaj, iran behrouz akbari-adergani food and drug laboratory research center, food and drug administration, ministry of health and medical education, tehran, iran

abstract        background and objective: aluminum salts are among the most common useful additive compounds in preparation of human and animal vaccines. aluminum phosphate and aluminum hydroxide are two additives that show good immunoadjuvant effects with many antigens. aluminum-containing vaccines lead to a better and longer immune response compared to adjuvant-lacking vaccines. the chromogen...

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