Saliva, tears, and nasal secretion contain the enzyme lysozyme which breaks down bacterial cells walls therefore killing bacteria.

Are found in the blood and they help phagocytes to bind better to pathogens this complement proteins sometimes form a complex in the membrane of the pathogen these complex creates a pore which help kill the pathogen.

Virus-infected cell secrete a protein named interferon, this protein will alert neighboring cells of the virus, these cell will produce antivirus in them to help prevent viruses infections.

Is the enhance of the immune system in an area. The response include; blood vessel become more permeable, blood flow increases, number of white cells increases.

Are a type of white cell that is produced in the red bone marrow but they mature in the thymus gland. There is a special kind of these cell called T-Cell

Are proteins produced by B-lymphocytes that specifically react with foreigns antigens.

Is a substance foreign to the body that causes an immune response; it can bind to an antibody or T-cell.

Are part of a nonspecific response.

Are located in all lymphatic tissues and can be thought as antibodies factories.

This kind of lymphocyte attaches to B-cells and other kind of T-cells to activate antibody recreation on both cells.

These kind of cells releases cytokines; cytokines stimulate the cells of the immune system to an area of infection, they also bind to pathogen releasing a chemical attack, killing the pathogen.

Sometimes temporary protection against a disease is needed, this protection occur when antibodies are made in an animal or other person and then transfer to the body. This is called......

Mark II scenarios were passive immunity is probable to happen.

These component form the specific response of the body.

Occurs when the immune system is exposed to antigen and memory cells are produced. (T and B cells).

Mark II options were active immunity is probable to happen.