|Apoptosis is also called as programmed cell death, a process by which the cells are destroyed. In human body, the destruction of cells can be of two types namely necrosis or apoptosis. Necrosis is caused due to external agents like bacteria or virus or other substances. In this case the cell is killed. While in apoptosis, the cells die from within. Due to internal factors, like old cells or damaged cells. Thus form a clean-up process inside the human. In a cancerous cell, apoptosis pathway is blocked and hence the cells grows continuously and leads to a malignant tissue.Scientific journaL is a periodical publication intended to further progress of science, usually by reporting novel research. There are thousands of scientific journals in publication, and many more have been published at various points in the past. Most journals are highly specialized, although some of the oldest journals publish articles andÂ scientific papers across a wide range of scientific fields. Scientific journals contain articles that are peer reviewed, to ensure that articles meet the journal's standards of quality, and scientific validity. The publication of the results of research is an essential part of the scientific method. If they are describing experiments or calculations, they must supply enough details that an independent researcher could repeat the experiment or calculation to verify the results. Each such journal article becomes part of the permanent scientific record.