It attracts and stimulates NK cells, and enhances resistance to viral infection.
It slows inflammation in a damaged area.
It stimulates macrophage activity.
It is a complement protein that initiates the alternative pathway when it interacts with other complement proteins in the plasma.
It increases the degree of local inflammation and accelerates blood flow to the region.
Produced by the transfer of antibodies from another source
Develops in response to antigen exposure
Each T cell or B cell has receptors that bind to one specific antigen, but ignore all others
Results from the large diversity of lymphocytes present in the body; there are millions of different lymphocyte populations, each sensitive to a different antigen
Exists because cell divisions of activated lymphocytes produce two groups of cells: one that attacks the pathogen immediately, and another that remains inactive unless it is exposed to the same antigen at a later date
Exists because the immune response ignores normal (“self”) tissues but targets abnormal and foreign cells (“nonself”) as well as toxins
A vital secondary binding process that confirms the activation signal
Self-destruction process of the cell, which results from the activation of genes within the target cell nucleus
Secreted compound that disrupts cell metabolism
Antibodies bind at superficial sites on the bacteria or toxins, making the virus or toxin incapable of attaching itself to a cell
The formation of immune complexes when the target antigen is on the surface of a cell or a virus
Prevention of pathogen adhesion
Antibodies dissolved in saliva, mucus, tears, and perspiration coat epithelia
Stimulation of inflammation
Stimulated release of chemicals from basophils and mast cells
Attraction of phagocytes
Antigens covered with antibodies attract eosinophils, neutrophils, and macrophages.
Circulating proteins called __________ can reset the temperature thermostat in the hypothalamus and raise body temperature.
__________-presenting cells are specialized cells that include all the phagocytic cells of the monocyte-macrophage group and the dendritic cells of the skin and lymphoid organs.
Which type of acquired immunity develops after a vaccination?
artificially induced active immunity
Which substance is produced by cells infected with viruses and enhances resistance to viral infection?