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.
Most people are not aware that the primary colors of light are different than those of pigments (for example, paint). This is because they provide color to us in different ways. 1  Pigment is subtractive, meaning that the color we see is actually the color that is not absorbed by the surface.ost people are not aware that the primary colors of light are different than those of pigments (for example, paint). This is because they provide color to us in different ways. 1  Pigment is subtractive, meaning that the color we see is actually the color that is not absorbed by the surface.