Cancer - Biological and ecological Aspects

Cancer is a group of diseases that begin in cells, the building blocks of life. Cells are essential parts of the body, and when they are damaged they can cause many problems. Under normal conditions, cells grow and divide to produce more cells when the body needs them. However, sometimes, these cells keep dividing causing a growth of tissue, which is called a tumor.

The body of humans is comprised of billions and billions of cells. These are our building blocks, and each of our body components are created of different type of cells. There are nerve units for the mind, epithelial units for the skin, and sinew cells for the sinews. These cells are controlled by certain factors, and under normal conditions divide to replace old and worn out ones. But sometimes a glitch happens, and the mechanism to control this division goes wrong. The cells then continuously divide, forming a mass of cells which results to a tumor. This tumor can be of a big problem in the body. Normally, cells replicate certainly: one cell becomes two, these two become four, and these four become eight, then sixteen, 32 and so on. As the new units pattern, the vintage units die. But, for causes still unidentified, approximately every million partitions, a female child cell splits off with an changed genetic code. When DNA duplicates with some errors, and it occurs at the right time, the cell doesn't die, it mutates.

Generally, units reproduce in an coordinated way. Amalign tumor is conceived when these units developed in an uninhibited way. An contaminated gene doesn't signify that you will get cancer, but will boost the risk. The method that makes the contaminated gene is called initiation, and the origin is renowned as the initiator. The promoter is the second element that acts on the contaminated gene that is essential for the infection to appear.

It can block certain passageways of body fluids, disrupt normal functions of the cells, and even cause a Once a malignant growth of cells occurred in a certain body organ, it can spread throughout other parts of the body. By the help of some enzymes, the cancer cells can leave the affected organ, for example the liver, and then enter the bloodstream. This would bring the cells close to another organ like the lungs, and with the help of collagen-dissolving enzymes, leave the bloodstream ...