Remove bacteria and cellular debris before lymph is returned to the blood

Is found in tissue fluid and plasma, and defends against bacterial cells, viruses, and toxins; also activates complement

Is obtained through antigen exposure, an immune response occurs in the person, in which antibodies and memory B cells are produces. (Long-lasting immunity)

Mass of lymphatic tissue in the nasopharynx

Lymph nodes are centers of what

Is found in exocrine gland secretions

Is obtained by receiving antibodies, since there is no antigen contact and no immune response occurs, no memory B cells are produced. (Short-term immunity)

T cells that respond to antigens and destroy them

These attack viruses, bacteria, and parasitic cells that enter a lymph node

Is found in plasma, activates complement, and contains Anti-A and Anti-B, which react with certain red blood cells during transfusions of mismatched blood

Occurs after exposure to the antigen itself, long-term resistance results, due to the events of a primary immune response. (Memory B cells are produced)

Proteins in the blood that help antibodies and kill their target

Monitor body fluids; performed by lymphocytes and macrophages

Is found on the surface of most B lymphocytes, and functions in B cell activation

Occurs as antibodies are passed from mother to fetus, this is short-term immunity, due to lack of an immune response and lack of memory B cell formation

Antigen-presenting cell; shows T and B cells what to attack

Engulf and destroy foreign particles, debris, and damaged cells

Is found on surfaces of basophils and mast cells; associated with allergic reaction

Involves the injection of gamma globulins containing antibodies or antiserum, this is short-term, because there was no antigen exposure, no immune response, and no memory B cells produced

Proteins secreted by T cells and other cells to aid and regulate the immune response