This ( + ) and (-) optical mixture is often termed vernolic acid or when studied in plants and leukotoxin when studied in mammals.
2.
One of the color experiments of particular interest in this interpretative painting is that of optical mixtures, a process by which the mixing of colors to produce another color, is left to the eye, rather than mixed on the palette; green foliage, for example, may be represented by intermingling splotches of blue and yellow.
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