title: An improved stain for immunodiffusion tests.
abstract: We describe an improved immunodiffusion stain using trichloroacetic acid to mordant dying by Crocein scarlet. Background is readily cleared without over-destaining using 0.3% acetic acid.
mesh_terms: D000936:Antigen-Antibody Complex; D005779:Immunodiffusion / Q000379:methods*; D013194:Staining and Labeling
chemical_list: D000936:Antigen-Antibody Complex