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.
If the three colors of light can be mixed to produce white, they are called primary colors and the standard additive primary colors are red, green and blue. Two colors that produce white when added together are called complementary. The color complementary to a primary color is called a secondary color.The complementary or secondary colors for red, green and blue are cyan, magenta and yellow respectively.These three colors are often referred to as the subtractive primary colors. When the three are combined in subtractive color mixing, they produce black.f the three colors of light can be mixed to produce white, they are called primary colors and the standard additive primary colors are red, green and blue. Two colors that produce white when added together are called complementary. The color complementary to a primary color is called a secondary color.