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immunodiffusion
immunodiffusion n. 
/ɪˌmjuːnə(ʊ)dᵻˈfjuːʒn/, /ᵻˌmjunoʊdᵻˈfjuʒ(ə)n/ (frequently with distinguishing word) any of various techniques in which an antigen and an antibody are allowed to diffuse towards each other in a gel or other solid medium, typically forming visible or measurable precipitin lines.
Brit. /ˌɪmjᵿnə(ʊ)dᵻˈfjuːʒn/
, /ˌɪmjᵿnə(ʊ)dᵻˈfjuːʒn//ɪˌmjuːnə(ʊ)dᵻˈfjuːʒn/U.S. /ˌɪmjənoʊdᵻˈfjuʒ(ə)n/
, /ˌɪmjənoʊdᵻˈfjuʒ(ə)n//ᵻˌmjunoʊdᵻˈfjuʒ(ə)n/ΘΚΠ
the world > life > biology > laboratory analysis > processes > [noun] > immunodiffusion, etc.
immunoelectrophoresis1955
immunodiffusion1959
1959 Nature 30 May 1512/1 We have found that cellulose acetate membrane..is equal, if not superior, to agar jelly for immuno-diffusion purposes.
1966 Lancet 24 Dec. 1403/2 A technique of immunodiffusion of serum through agar gave a sensitive and fairly accurate measure of the concentrations of the three main classes of immune globulins.
2002 J. Stanley Essent. Immunol. & Serol. xii. 171/1 Immunodiffusion techniques are broadly classed into two main groups: single immunodiffusion or double immunodiffusion.
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