Reaction of soluble antigen with antibody is known as -
When a soluble antigen combines with its antibody in the presence of electrolytes at a suitable temperature and pH, the antigen-antibody complex form an insoluble precipitate. This is called precipitation reactions. Reference:Anathanarayan & paniker's 9th edition, pg no: 105 <\p>
Agglutination
Precipitation
Flocculation
Complement fixation
Immunology