In every series of tests the amount of antiserum was held constant and the amount of antigen was varied.
The antiserum used for the precipitin reaction was obtained by treating a rabbit with human blood serum.
More than two series, however, resulted in little or no improvement of the reactivity of the antiserum.
The Libby Photronreflectometer was used to measure the turbidities developed by the interaction of antigen and antiserum.
antiserum an·ti·se·rum (ān'tĭ-sēr'əm)
A serum containing antibodies that are specific for one or more antigens. Also called immune serum.
Plural antiserums or antisera
Human or animal serum containing one or more antibodies that are specific for one or more antigens and are administered to confer immunity. The antibodies in an antiserum result from previous immunization or exposure to an agent of disease. See also acquired immunity.