Trendley Dean initiated a major project to investigate the epidemiology of Colorado
Brown Stain (now renamed dental or enamel fluorosis).
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.
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.
* Have you ever seen a
brown stain on your ceiling tiles?
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.
According to the Wall Street Journal, children are most at risk because fluoride exposure occurs when their teeth are forming, leading to a permanent
brown stain called "dental fluorisis" (which now affects 22 percent of American kids).
Peripheral flagellated cells showed an intense
brown stain with the con A probe for mannose [ILLUSTRATION FOR FIGURES 1A,B OMITTED], but only a weak stain with GlcNAc [ILLUSTRATION FOR FIGURE 1C OMITTED], and no stain at all with the other lectins tested (SBA, DBA, PNA, UEA-1) (not shown).