Enhancement by various cations of the double-diffusion precipitin test.
D000937:Antigen-Antibody Reactions; D002412:Cations; D004058:Diffusion; D006801:Humans; D011233:Precipitin Tests; D011234:Precipitins; D054140:Refractive Surgical Procedures
D002412:Cations; D011234:Precipitins
ANTIGEN-ANTIBODY REACTIONS; PRECIPITINS