*'''Affinity''' - biochemical term describing the bonding strength across a ligand-protein bond
+
*'''Affinity''' - biochemical term describing the bonding strength across a ligand-protein bond
+
*'''Affinity chromatography''' - a chromatogrphic method based on the highly specific reactions of antigen and antibody. Mainly used for the extraction of monospecific (polyclonal) antibodies and the depletion of cross-reacting antibodies
*'''Agar gel immunodiffusion''' - see Ouchterlony double immuno diffusion
*'''Agar gel immunodiffusion''' - see Ouchterlony double immuno diffusion
*'''Alopecia''' - abscence of hair in an area where it is normally present
*'''Alopecia''' - abscence of hair in an area where it is normally present