What is the cell?
K cell, also known as the Killer cell or a natural killer cell, is considered to be an essential part of the congenital immune system of the body. These cells help protect the body from disease finding and killing abnormal cells that occur in tumors, infected cells and invasive, parasitic or foreign cells. The cell not only kills infected or abnormal cells in the body, but can also release enzymes that call other types of immune cells such as T and B cells, into the specific area of the body to combat the disease or infection. The K cell is considered to be particularly important in helping the body to fight against viral infection. The cell usually represents 10 to 15% white blood cells of a healthy person or lymphocyte. These cells are often the first to recognize pathogenic attackers in the body, and as such can be essential for starting an immune response.
to cell k is considered cytotoxickou. When it encounters a tumor cell, bacteria, other alien cells or a cell infected with a virus, it kills this cell by release of a protein called perforation. PERFORIN strikes holes in the outer membrane from the penalty cell. The killer cell can then release granzym, protease, which penetrates a forced cell membrane and causes apoptosis or death of cells. Not only is an infected or invasive cell usually killed, but any viruses that replicate inside are generally also killed.
As soon as abnormal, infected or foreign cell is destroyed, the killer cell can release enzymes that call T cells and B cells, other important white blood cells, to help kill the tumor or fight infection. These cells, especially T cells, can produce their own enzymes that can increase the effect on cells.
Natural killer cells aritly important in fighting viruse infection because their means to induce cell death with apoptosis can help prevent the spread of the virus to other body cellsa. Other immune cells can kill cells of infected viruses, but often do so with a lie of cells, a process that releases replicated viruses in the affected cell. After relaxing, replicated viruses can spread to other, close cells and worsen infection.