False negatives and false positives are significant issues in medical testing. All the negatives imply a set of positives. Whitney U, which tests whether positives are ranked higher than negatives. It is capable of rendering painterly images from photographic negatives. Uelsmann produces composite photographs with multiple negatives and extensive darkroom work. Mastic varnish was used to protect and preserve photographic negatives. Some dialects of British English use negative concords, also known as double negatives. These prices were similar to those of prints made from film negatives. It was also the standard cleaner for photographic film (movie/slide/negatives, etc.). Like many early films, the negatives and prints of "Joymati" are missing. After his death, most of his negatives and prints were destroyed. Significant color correction was necessary because of the fading of original Technicolor negatives. Blackblood was able to obtain photo negatives of this. Independence affected women in both positive and negatives ways. Each of the three resulting negatives was printed onto a special matrix film.