group agglutination n.
The clumping of antibodies specific for a group of antigens common to several bacteria, each of which possesses its own specific antigen.
- Group agglutinin
group agglutinin n. An agglutinin specific for a group antigen. Also called cross-reacting agglutinin, minor agglutinin, partial agglutinin.
noun, Insurance. 1. a plan in which the members of a group, usually employees of the same company, receive annuities upon retirement.
- Group antigen
group antigen n. Any of several antigens that are shared by related genera of microorganisms.
- Group a streptococcus
group A streptococcus n. A common but virulent streptococcus that kills the tissue it infects and produces toxins that trigger a form of shock that affects the vital organs.