- The science that studies the blood serum, and especially the reaction between antigens and antibodies in serum.
- The characteristics of the blood serum in a particular disease or organism.
- (informal) A blood test to detect the presence of, and often to measure the amount of, various components of the serum (such as electrolytes, antibodies, and antigens).
science that studies the reaction between antigens and antibodies in serum
characteristics of the blood serums of a particular disease or organism