Journal of Immunological Methods vol:23 issue:1-2 pages:109-16
A procedure is described making it possible to obtain quantitative data with the immunohistochemical peroxidase anti--peroxidase (PAP) technique. After applying PAP on fixed fibroblast preparations, peroxidase enzymic activity is measured on solubilized immune-complexes. The results show this technique to be sensitive and reproducible. Differences in the amounts of the same antigen (alpha2-macroglobulin) are detected in differently treated fibroblast preparations. The value of the technique for the demonstration of cellular antigens is discussed.