Brown Stain

Also found in: Encyclopedia.
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
References in periodicals archive ?
That year, he traveled across the Rocky Mountains to Oakley, Idaho to investigate reports about peculiar brown stains found on the teeth of that community's children.
Brown stain in pine is usually caused by the migration and subsequent concentration of sugars, proteins, and phenols at or near the lumber surface reacting with nitrogen, wood, and heat during the kiln processes (Kreber et al.
Dip the sponge into the bowl of tea, and wipe the brown stain all over both sides of each sheet of paper.
McKay and Black investigated Colorado Brown Stain for six years.
Fretwell had been mapping a British Antarctic Survey base near the Halley station on the Brunt ice shelf in October 2008 when he noticed a brown stain on the satellite images.
The sections were examined for a golden brown stain indicative of a positive staining.
McKay suggested the association between this mottled enamel and an agent in the Colorado Springs, Colorado water supply during investigation of the Colorado brown stain seen in the teeth of many of his patients.
It causes an unsightly and unappetising brown stain or appears as a fuzzy, greyish-white spot on the food.
Cappuccino is a medium-dark stain with elegant brown tones that will be the first dark brown stain available on maple and oak cabinets.
The quills are then inspected for "foxing," a reddish brown stain which occurs due to damp conditions.