Concept of necrosis The term necrosis refers to non-apoptotic, i.e. non-programmed, cell death. Cycle and cell death During its life cycle, cell undergoes several morphologic and structural changes. These changes are known and are characterized and divided into phases: interphase (constituted by G1 phase, S phase and G2 phase) and M phse (constituted by mitosis […]

Northern blot definition Northern blot refers to a technique used in Molecular Biology in which genetic expression is studied through detection of messenger RNA (mRNA) in a sample. This technique makes it possible to determine whether a gene is being transcribed into RNA or not. In addition, it is also possible determine the gene expression […]

Nucleosome definition Nucleosome refers to the fundamental structural unit of chromatin in the eukaryotic cell. It is this protein complex that gives the chromatin the ‘necklace of beads’ aspect. Cell nucleus and chromatine The cell stores all information necessary for its growth, metabolism and division into the nucleus, in the form of DNA. However, if […]