Page 1559 - Veterinary Immunology, 10th Edition

an antigen.
VetBooks.ir Sepsis The systemic inflammatory response to an infectious agent.

Septic shock A severe disease condition that results from the
massive release of cytokines such as TNF as a result of infection.

Seroconversion The appearance of antibodies in blood, indicating
the onset of an infection.

Serology The science of antibody detection.

Serum The clear, yellow fluid that is expressed when blood has
clotted and the clot contracts.

Serum sickness A type III hypersensitivity response to the
administration of foreign serum as a result of the development
of immune complexes in the bloodstream.

Signal transduction The transmission of a signal through a
receptor to a cell by means of a series of linked reactions.

Skin test A diagnostic procedure that induces a local inflammatory
response following intradermal inoculation of an antigen or

allergen.

Somatic antigens Antigens associated with bacterial bodies.

Somatic mutation Mutations that occur in somatic rather than
germline cells. In immunology, this refers to the extensive

mutations that occur in the V genes of B cells during the course
of an immune response.

Specificity A term that describes the ability of a test to give true-
positive reactions.

Splice The joining of two DNA or RNA segments (exons) together.

Stem cell A cell that can maintain itself and serve as a source of

many differentiated cell lines.

Stimulation index A measure of the extent to which a cell

population is stimulated to divide. It is the ratio of thymidine

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