What is programmed cell death?

programmed cell death is a process by which cells in plants and animals die through self -destruction rather than injury. Also in animal cells as apoptosis, this process is usually part of the embryonic development of all animals and is considered to be responsible for the development of individual numbers and to remove excess materials at different stages of animals. It is also an element of the immune system in animals and the process of excess or defective cells in the body is eliminated to maintain homeostasis and health. Programmed cellular death can also have a negative effect on the body of an animal or humans when viruses are lowered. Plants and animals usually grow by division and replication of cells in the body. However, in order to compensate for this process, a programmed cell death occurs so that the body of the plant or animal prevents too much speed. These pieces are then referred to as "consumed" of phagocytes in the body. This prevents any harmful materials or codein the cell to affect the rest of the cells of the organism.

programmed cellular death is considered a particularly important part of the growth and development of animals in early life and embryonic stage. For example, evidence suggests that the early development of individual fingers and fingers in the human fetus is caused by cell apoptosis that would exist between numbers but died, so the remaining cells left the individual fingers. Similarly, the reinforcing of the pulpuocas into its body, because it becomes a frog, is rather caused by a cell death rather than continuing the division and growth of these tails.

Unfortunately, programmed cell death can be prevented by certain viruses and other undesirable physiological conditions. The spread of cancer throughout the animal's body is usually caused by apoptosis, which does not occur correctly in the body of the body. Ideal conditions should be ordered cancer cells to die proteins in the body, which prevented those from thoseabout cancer cells before division and spreading.

However,

programmed cellular death does not give up in many cases of cancer correctly, leading to the spread of potentially fatal cells throughout the body. Similarly, the human immunodeficiency virus (HIV) uses a programmed cellular death in a negative way by causing auxiliary cells of T, which usually fight viruses and other infections in the human body to begin self -destruction. This condition, referred to as the syndrome obtained by immunodeficiency (AIDS), destroys the immune system of the body, which often leads to complications or death by other diseases.