When the number of silver-stained nucleolar organizer regions (Ag-NORs) was counted in 274 patients with non-small cell lung cancer, the mean number per nucleus in patients overall was 5.07 +/- 1.92 (SD). With the use of the tumor (T)-nodes (N)-metastasis (M) classification, the mean Ag-NOR count for patients with T1 and T2 disease was statistically lower than that for those with T3 and T4 dise...

objective: breast cancer comprise approximately one third of malignant cases in women and is considered as the most common invasive condition in women at an age range of 15-54 years and as the second most prevalent cause of mortality at an age range of 55-74 years. tumor inhibiting factor p53 is a vital homeostatic regulator and its inactivation at the related gene or molecule could lead to tum...

When the number of silver-stained nucleolar organizer regions (AgNORs) was counted in 274 patients with non-small cell lung cancer, the mean number per nucleus in patients overall was 5.07 ±1.92 (SD). With the use of the tumor (T)-nodes (N)-metastasis (M) classification, the mean Ag-NOR count for patients with I, and I • disease was statistically lower than that for those with T3 and T< dise...

The simultaneous ultrastructural localization of the Ag-NOR proteins and ribonucleoproteins (RNP) was carried out during mitosis in human breast cancerous tissues using a one-step silver staining method followed by acetylation. Owing to the good preservation of the cells and to the high precision of the Ag staining we were able to follow the behaviour of the argyrophilic nucleolar components fr...

In this study, we investigated the chromosomes of three species Sicarius spiders from Brazilian Caatinga, using classical and molecular cytogenetic techniques. Based on phylogenetic approach, also discussed about variation diploid number, types sex chromosome system changes in localization ribosomal genes Scytodoidea. are Synspermiata that together with genera Loxosceles Hexophthalma constitute...

Objective: Breast cancer comprise approximately one third of malignant cases in women and is considered as the most common invasive condition in women at an age range of 15-54 years and as the second most prevalent cause of mortality at an age range of 55-74 years. Tumor inhibiting factor p53 is a vital ...

DOMESTIC BUFFALOES ARE DIVIDED INTO TWO GROUP BASED ON CYTOGENETIC CHARACTERISTICS AND HABITATS: the "river buffaloes" with 2n = 50 and the "swamp buffaloes", 2n = 48. Nevertheless, their hybrids are viable, fertile and identified by a 2n = 49. In order to have a better characterization of these different cytotypes of buffaloes, and considering that NOR-bearing chromosomes are involved in the r...

Consider 3–connected matroids that are neither binary nor ternary and have neither U2,5– nor U3,5–minors: for example, AG(3, 2)′, the matroid obtained by relaxing a circuit-hyperplane of AG(3, 2). The main result of the paper shows that no matroid of this sort is representable over any field. This result makes it possible to extend known characterisations of the binary and ternary matroids repr...