Abstract
Mouse monoclonal and rabbit polyclonal antibodies to human pituitary hormones were applied together to sections of normal and neoplastic human pituitary tissue. Binding sites were revealed with species-specific immune reagents combined with various enzymes (peroxidase, alkaline phosphatase, and beta-D-galactosidase). The enzymes were developed separately to give differently colored end-products. Where two hormones were present in the same cell, a mixed color was produced. Up to four hormones could be immunostained in a single section. Multiple immunoenzymatic staining has great potential for the analysis of plural antigen production by single cells and relationships between cells producing different antigens.
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