释义 |
brown stain
brown stainA chocolate brown stain produced by fungus in the sapwood of some pine trees.Brown Stain A popular term for any immunoperoxidase—special stain used to detect antigens (e.g., leukocyte common antigen, cytokeratin, S-100, etc.)—in tissues by linking monoclonal antibodies raised against the antigen of interest to an enzyme in the last of several antigen-antibody linking steps; if antigen X is present, the enzyme digests a colourless substrate into a brown pigmented product |