Studies on the effectiveness of cranberry juice for preventing or treating UTIs have produced mixed results. The red berry contains a tannin that prevents E. coli bacteria - the most common cause of urinary tract infections - from sticking to the walls of the bladder, where they can cause infection.
primary color for pigments - any of three pigments from which all colors can be obtained by mixing; the primary colors for pigments are red, blue, and yellow. primary colour for pigments. primary color, primary colour - any of three colors from which all others can be obtained by mixing.
View More. Definition: In fine arts, there are three primary colors: red, blue, and yellow. They are called primary colors because they cannot be created by mixing other colors. Primary colors form the basis for color theory or color mixing, as using these three colors it's possible to mix most other colors.A primary color can be any of the red, blue, or yellow pigments available to a painter.hey are called primary colors because they cannot be created by mixing other colors. Primary colors form the basis for color theory or color mixing, as using these three colors it's possible to mix most other colors. A primary color can be any of the red, blue, or yellow pigments available to a painter.