Greek mythology tells that when the curious Pandora opened a forbidden box, All evils and miseries spread throughout the world. Among those calamities were, A word that in Latin means slime, Poison and stench. Viruses cause many diseases, From the common cold to AIDS, Or acquired immune deficiency syndrome, Perhaps the most terrible scourge of modern times. Viruses have the ability to confuse experts and laymen alike. One feature Common Definition that has attracted the most attention has always been that of its high mutation; So much so that it could be admitted that the evolution of viruses is a million times faster than that of cellular microorganisms. But if that were true, How could they have maintained their identity as pathogenic species over time? Why haven’t they mutated to disappear?
By directing the assembly of the cell’s skeleton
The cytoplasm occupies the interior of the cell. But it is not some amorphous medium where the organelles float. It is, on the contrary, A skeleton of protein fibers and accessory molecules that, As a dynamic scaffolding, Supports the multiple external and internal modifications that the cell undergoes in the course of its existence. We hardly know the organization of this cytoskeleton and the functions it fulfills, What we do know is that the centrosome Coffee Shops Business Email List plays a fundamental role in this type of process. The centrosome structure lacks a defined figure. Microtubules, one of the main elements Common Definition of the cytoskeleton, radiate from it. To influence the distribution of the intermediate filaments and the minor actin filaments, the other main protein fibers involved in said cellular framework. The centrosome directs, like a skilled architect, The cytoskeletal project.
Molecular biophysics Nonspecific DNA-ligand interactions
In 1952 Aaron separated the cells from a chicken embryo by incubating them in an enzyme solution and gently shaking them. But came back together in a new aggregate. Also observed that when retinal and liver cells converged in this way, The retinal cells Common Definition migrated into the cell mass. Townes and Johannes conducted a similar experiment with cells from amphibian embryos, Which in this case were rearranged to produce the layers of tissue from which they Sale Lead came. These experiments, added to countless observations, reveal the ability of cells to recognize each other and respond in conjunction. Sperm, Distinguish the oocytes of their own species from the female gametes of. While others do so in different organs. Through its influence on the complex network of fibers, the centrosome controls the shape, Polarity and movement of cells, As well as the transport of materials through them.
