THE COMPLEX ORGANIZATION OF EUKARYOTIC CELL NUCLEUS: THE NUCLEAR BODIES (I)

Identified short time after the discovery of cells, over 300 years ago, the cell nucleus of eukaryotes continuously focused the interest of scientists, which used increasingly sophisticated research tools to clarify its complex structure and functions. The results of all these studies, especially those carried out in the second half of the past century, proved and confirmed that the eukaryotic cell nucleus is the control center of all cellular activities and also ensures the continuity of genetic information along successive generations of cells. These vital functions are the result of selective expression of genes contained in the nuclear chromatin, which is a high ordered and dynamic structure, in permanent and bilateral relations with other nuclear components. Based on these considerations, the present review aims to synthetize the latest researches and concepts about the cell nuclear territory in three distinctive parts, according to the complexity of the topic