Cancer Cells:

Cancer is a one of the most popular disease in which cells are divided without any control. Cell is a basic unit of our body. It means that our body is made up of cells. In normal condition cells grow and divide according to the requirement in controlled way and old cells died and replaced with new cells. Cancer is a group of diseases. There are more than 100 types of cancer which are generally named for the organ or type of cell in which they start. If cancer starts one part of the body then it can also spread in other parts of the body through blood or lymph. Sometimes this process goes wrong. Cells do not die when they should and produce new cells when body does not required them. These extra cells develop a tissue called tumor.

The characteristics of normal cells:

The normal cells of our body have the following characteristics:

• Reproduce them only whenever required.
• Stop the reproducing when more cells not required.
• All the cells join together at right place.
• Destroys itself if they are damaged.

Characteristics of Cancerous cells:

Cancer cells are different from normal cells in following ways:

• Cancer cells do not stopping reproducing when it should.
• Cancer cells are un-controlled.
• Cancer cells don't join together.
• Cancer cells don't die when it should.

The cancer can be dividing into following broader categories:

• Carcinoma: In this cancer, cells are begins in skin or tissue that cover internal organs.
• Sarcoma: In this cancer, cells are begins in bone, cartilage, fat, muscle, blood vessels, or other tissue.
• Leukemia: In this cancer, cells are begins in blood-forming tissue.
• Lymphoma and myeloma: In this cancer, cells begins in the immune system.
• Central nervous system cancers: In this cancer, cells begins in the tissues of the brain and spinal cord.