TY - RPRT TI - Visualization principles in thin-layer immunoassays (TIA) on plastic surfaces. AU - H Elwing AU - L Nilsson AU - O Ouchterlony PY - 1976 DO - 10.1159/000231654 UR - https://pubmed.ncbi.nlm.nih.gov/793997/ ID - 793997 ER -