Inventors:
James A. Rybski - Tucson AZ
Pamela S. Vandivort - Tucson AZ
Anthony L. Hartman - Tucson AZ
Phillip C. Miller - Tucson AZ
Michael J. Degroff - Tucson AZ
Michael J. Gizinski - Tucson AZ
Assignee:
Ventana Medical Systems, Inc - Tucson AZ
International Classification:
C12N 996
C12Q 137
G01N 134
G01N 3353
Abstract:
The present invention provides an improved method for staining slides using immunochemical reagents. The method comprises the following steps. The assay region of a slide (the region containing the tissue section) is washed with an improved rinsing solution comprising water and a detergent. An evaporation inhibitor liquid is applied to the slide to cover the assay region. For antigens requiring unmasking, the tissue section is combined with an improved, stabilized proteolytic enzyme solution. The slide is rinsed, and the evaporation inhibitor liquid is reapplied to the slide. A primary antibody in an improved diluent containing globulins from the same species as a second antibody is combined with the tissue section for a time sufficient for substantially complete antibody binding. The slide is rinsed, and the evaporation inhibitor liquid is reapplied. A labeled second antibody in the improved diluent is combined with the tissue section for a time sufficient for substantially complete antibody binding.