it is sometimes difficult to recognize a jaw lesion as osteosarcoma, ossifying fibroma or ‎fibrous dysplasia in routine hematoxylin and ‎eosin staining and a more accurate technique is needed to differentiate these ‎lesions. ‎many studies have shown the potential usefulness of silver-stained nucleolar organizer region (agnor) parameters for the diagnosis of various neoplasms. this study was car...

Abstract This study aimed to identify species of Astyanax bimaculatus group from four Itaipu Reservoir tributaries (Paraná River Basin) by cytogenetics and molecular markers (COI) investigate the possible occurrence cryptic diversity in part this basin. The populations showed only one karyotype formula simple AgNORs. FISH with 18S rDNA probe a high variation, 5S probes evidenced sites most spec...

In order to assess the proliferative behaviour of ameloblastoma epithelium nine cases this neoplasm were retrieved from files Oral Pathology Service laboratory Rio Grande do Sul Federal University School Dentistry. Two proliferation marker techniques employed: AgNor - argyrophilic nucleolar organizer regions staining and cell nuclear antigen (PCNA) immunohistochemical assessment technique. Each...

Aims-To study correlations between the pattern of silver stained nucleolar organiser regions (AgNORs) in chronic lymphocytic leukaemia (CLL) and parameters of tumour kinetics. To investigate whether quantitation of the AgNOR pattern can be used to discriminate between patients with stable and progressive disease.Methods-Peripheral blood smears from 48 patients with CLL, classified as having eit...

CONTEXT Head and neck squamous cell carcinoma (HNSCC) consists of squamous cell carcinomas (SCCs) arising in the upper aerodigestive tract and accounts for 5% of cancers worldwide. In Malaysia, cancers of the nasopharynx, larynx, tongue and oral cavity are among the top twenty most common cancers in men. Argyrophilic nuclear organizer regions (AgNORs) are increased from normal mucosa to premali...

The degree of DNA instability as determined by immunohistochemical staining with anti-single-stranded DNA antibody after acid hydrolysis (the DNA instability test) was used as a marker of malignancy. The test was applied to tissues of oral leukoplakia assessed histopathologically as hyperplasia (38 cases), mild (12 cases), moderate (11 cases) and severe (8 cases) dysplasia, and invasive squamou...