argyrophilic staining of nucleolar organizer regions (agnor) has been considered to be useful in the diagnosis and prognostic evaluation of different cutaneous tumors. in order to evaluate the role of the agnor technique in discriminating aggressive from non-aggressive basal cell carcinoma (bcc), paraffin-embedded histologic sections from 30 cases of aggressive bcc (bcc2) and 30 cases of non-ag...

nucleolar organizer regions (nor) are defined as nucleolar components containing a set of argyrophilic proteins which are selectively stained by colloidal silver nitrate staining. although studies have shown that the number of nor dots or particles is directly related to the rapidity of cell proliferation in cancer cells, prognostic or diagnostic value of nor remains controversial. the aim of t...

background: tuberculosis continues to be a serious public health problem causing nearly three million deaths per year all over the world. despite major improvement in diagnosis, it is not possible to control the disease in the absence of surveillance treatment, and follow-up programs. objectives: this research was designed to study the frequency of mycobacterium tuberculosis among specimens ref...

Background The early diagnosis and treatment of skin soft tissue infections caused by nontuberculous mycobacteria (NTM) are important, especially as with rapidly growing (RGM) rare difficult to diagnose treat. Recently, we identified 22 cases NTM infections; in this study, suggest strategies analyzing the demographic characteristics progress these patients. Methods A retrospective study patient...

..................................................................................................................1 CHAPTER 1 : INTRODUCTION..............................................................................2 CHAPTER 2 : LITERATURE REVIEW...................................................................8 2.1 Virus characteristics ........................................................

Aim and objectives: To investigate the susceptibility of enamel surface for repigmentation by red wine brandy stains after 35% hydrogen peroxide bleaching. Methodology: 40 freshly extracted human permanent maxillary central incisor teeth were collected study. Incisors stored in 0.1% thymol solution used within 1 month extraction. The cleaned with ultrasonic scaler, polished pumice paste. sample...

The aim of this in vitro study was to evaluate the susceptibility of a hybrid composite resin (Filtek Z250 - 3M ESPE) to staining, when light cured in four different modes and immersed in two different media. Composite resin specimens were randomly prepared and polymerized according to the experimental groups (conventional -50 mW/cm(2) / 30 seconds; soft start -300 mW/cm(2) / 10 seconds + 550 m...

PURPOSE Mechanisms determining epithelial resistance versus susceptibility to microbial traversal in vivo remain poorly understood. Here, a novel murine model was used to explore factors influencing the corneal epithelial barrier to Pseudomonas aeruginosa penetration. METHODS Murine corneas were blotted with tissue paper before inoculation with green fluorescent protein-expressing P. aerugino...

BACKGROUND Nocardia species cause infections in both immunocompromised and otherwise immunocompetent patients, although the mechanisms defining susceptibility in the latter group are elusive. Anticytokine autoantibodies are an emerging cause of pathogen-specific susceptibility in previously healthy human immunodeficiency virus-uninfected adults, including anti-granulocyte macrophage colony-stim...

For preoperative and intraoperative detection of tumor distribution, numerous multimodal contrast agents, such as magnetic nanoparticles (MNPs) with several examination indicators, are currently in development. However, complex materials, configuration, and cost are required for multimodal contrast agents, accompanied by a high possibility of toxicity and low popularity in clinics. Nevertheless...